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Absorption spectrum of Sn I between 1580 and 2040 Å
16
Absorption spectrum of SnI between 1580 and 2040 A C. M. Brown* and S. G. Tilfordt E. 0. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375 Marshall L. Ginterl Institute for Molecular Physics, University of Maryland, College Park, Maryland 20742 (Received 23 November 1976) The high-resolution absorption spectrum of Sni is reported in the region between 1580 and 2040 A. Transitions have been observed from the 5p 2 3 P and 'D terms to levels with J < 3 associated with 5p us, 5p nd, 5pn g, and 5 s5p configurations. Energy levels have been determined with n * values as high as 76. A total of 1068 lines and 639 odd-parity energy levels are reported, a major part of which are new. An analysis of these data, based on Lu-Fano graphical methods and multichannel quantum-defect parameterization, is presented. Ionization limits of 59232.69 i 0.10 cm-' and 63484.18 - 0.10 cm-' have been determined for levels converging on the 5p 2 P,, 2 and 5p 2 P3/ 2 levels of Snii, respectively. INTRODUCTION The electronic spectrum and structure of Sni have been investigated extensively. Early investigations sum- marized by Moorel were superseded in 1964 by data in the unpublished theses of Brill2 and Wilson. 3 Brill re- investigated the Sni emission spectrum in the -2060- 13 600 A region and incorporated all existing data, in- cluding emission data made available to him by Hum- phreys (in the infrared) and Shenstone (in the vacuum uv), to produce an improved Sni line list covering the -1603-24 712 A region. Wilson reinvestigated the Sni absorption spectrum in the 1215-2382 A region, and listed over 400 lines of which 194 were classified. Brill also provided a revised listing of 62 even-parity and 138 odd-parity energy levels for Sni, while Wilson re- ported 50 odd-parity levels not included in Brill's list. The present investigation emphasizes the absorption spectrum of tin in the 1580-2040 A region. The spec- trum reported here is more complete and more highly resolved than Wilson's spectrum and has improved purity (only about 85% of Wilson's lines have been con- firmed as Sni) and wavelength accuracy. Finally, the use of Lu-Fano 4 graphical methods in the present work leads to an essentially total assignment of the observed Sni spectrum. The absorption spectrum of Sni under discussion here consists of transitions between levels associated with the ground configuration and levels associated with ex- cited electron configurations (a) 5S 2 5pnx (with x being s, d, or g) that have the ground term 5s 2 5p 2 P° of Snii as their core, or (b) 5s5p 3 . Extensive interactions among the levels of configurations (a) and (b) make any pure configuration or pure angular momentum coupling scheme labels artificial. In Sni, as in C i,s Si i, 6,7 and Ge i, 8 only the general dipole selection rules (even -odd, AJ = O. ± 1, J =0 + J = 0) are observed to apply to transitions between four levels (designated 3 P 2 , 1 , 0 and 1D 2 levels in LS notation) of 5s25p 2 and the many levels associated with the excited configurations. There are 19 odd-parity channels with J'3 associ- ated with configurations (a) above. Consideration of the u-coupling terms produced by adding an ns, nd, or ng electron to 2 P / 2 or 2 Po/ 2 indicates that four J=3, four J= 2, three J= 1, and one J= 0 channel belong to the 2 P°/ 2 (upper) ion core, and two J=3, two J=2, two 607 J. Opt. Soc. Am., Vol. 67, No. 5. May 1977 J= 1, and one J = 0 channel belong to the 2 P1/ 2 (lower) ion core. Fifteen of these channels result from ns or nd configurations, whereas two J=3 and one J=2 chan- nel belonging to 2 P '/ 2 and one J= 3 channel belonging to 2 P / 2 are from ng configurations. In addition, sever- al levels of the interloper configuration 5s5p 3 exist in the same energy region as the levels from the configura- tions just discussed. The AJ selection rule limits the dipole transitions between the ground term, 5p 23 P, and the 19 channels associated with configurations (a) listed above to 35 spectral series. The Sni ground term is regular with 3 P 1 - 3 Po and 3 P 2 - 3 Po separations 2 of 1691. 806 and 3427. 673 cm- 1 , respectively, whereas the Snii 5p 2 P3/ 2 - 2 P 1 2 spacing 2 is 4251. 494 cm-'. Hence, several of these 35 spectral series from the three 5P 23 p levels of Sni converge to each of six apparent convergence limits between 1791.95 and 1575.19 A. Finally, the AJ selec- tion rule limits the allowed transitions between the 5p 2 1D2 level (which is 2 8612. 955 cm-' above 5p 2 3PO) and the channels from configurations (a) to 17 spectral series, which can converge to either of two apparent series limits at 1975. 51 and 1822.45 A. The multichannel, two-limit approach to the problem of interpreting the many interactions among the energy levels converging on the two ground-state levels of Snii is the same as that discussed 8 in detail for the analogous channels in Ge I. Briefly, the interactions between channels (level series plus their continua) are periodic because level series belonging to channels converging on different ion core limits periodically cross. The restriction that interacting levels have the same parity and J value permits the consideration of the resulting channel mixings for each J value as an individual problem. The possible energy levels corre- spond to the points of intersection of functions ni =G(n*) and nH =f(n2*). The first function can be repre- sented 8 -1 0 by Hi =G(n2*)=n2*(l -n * Ay / 2, while nH =f (n*) is the solution of 2 (1) (2) In Eq. (1) the quantities nl and n 2 * are the effective quantum numbers for each level based on the two pos- sible ionization energies, El.. (for 5Pi 2 P 1 / 2 ) and E 2 ., (for Copyright C 1977 by the Optical Society of America 607
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Transcript of Absorption spectrum of Sn I between 1580 and 2040 Å
Absorption spectrum of SnI between 1580 and 2040 AC. M. Brown* and S. G. Tilfordt
E. 0. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375
Marshall L. GinterlInstitute for Molecular Physics, University of Maryland, College Park, Maryland 20742
(Received 23 November 1976)
The high-resolution absorption spectrum of Sni is reported in the region between 1580 and 2040 A.Transitions have been observed from the 5p 23P and 'D terms to levels with J < 3 associated with 5p us, 5p nd,5pn g, and 5 s5p configurations. Energy levels have been determined with n * values as high as 76. A total of1068 lines and 639 odd-parity energy levels are reported, a major part of which are new. An analysis of thesedata, based on Lu-Fano graphical methods and multichannel quantum-defect parameterization, is presented.Ionization limits of 59232.69 i 0.10 cm-' and 63484.18 - 0.10 cm-' have been determined for levelsconverging on the 5p 2P,, 2 and 5p 2P3/2 levels of Snii, respectively.
INTRODUCTION
The electronic spectrum and structure of Sni have beeninvestigated extensively. Early investigations sum-marized by Moorel were superseded in 1964 by data inthe unpublished theses of Brill2 and Wilson. 3 Brill re-investigated the Sni emission spectrum in the -2060-13 600 A region and incorporated all existing data, in-cluding emission data made available to him by Hum-phreys (in the infrared) and Shenstone (in the vacuumuv), to produce an improved Sni line list covering the-1603-24 712 A region. Wilson reinvestigated the Sniabsorption spectrum in the 1215-2382 A region, andlisted over 400 lines of which 194 were classified. Brillalso provided a revised listing of 62 even-parity and138 odd-parity energy levels for Sni, while Wilson re-ported 50 odd-parity levels not included in Brill's list.
The present investigation emphasizes the absorptionspectrum of tin in the 1580-2040 A region. The spec-trum reported here is more complete and more highlyresolved than Wilson's spectrum and has improvedpurity (only about 85% of Wilson's lines have been con-firmed as Sni) and wavelength accuracy. Finally, theuse of Lu-Fano4 graphical methods in the present workleads to an essentially total assignment of the observedSni spectrum.
The absorption spectrum of Sni under discussion hereconsists of transitions between levels associated withthe ground configuration and levels associated with ex-cited electron configurations (a) 5S2 5pnx (with x beings, d, or g) that have the ground term 5s2 5p2 P° of Sniias their core, or (b) 5s5p3 . Extensive interactionsamong the levels of configurations (a) and (b) make anypure configuration or pure angular momentum couplingscheme labels artificial. In Sni, as in C i,s Si i, 6,7 andGe i, 8 only the general dipole selection rules (even-odd, AJ = O. ± 1, J = 0 + J = 0) are observed to applyto transitions between four levels (designated 3 P2, 1, 0
and 1D2 levels in LS notation) of 5s25p2 and the manylevels associated with the excited configurations.
There are 19 odd-parity channels with J'3 associ-ated with configurations (a) above. Consideration of theu-coupling terms produced by adding an ns, nd, or ngelectron to 2 P /2 or 2Po/2 indicates that four J=3, fourJ= 2, three J= 1, and one J= 0 channel belong to the2P°/2 (upper) ion core, and two J=3, two J=2, two
607 J. Opt. Soc. Am., Vol. 67, No. 5. May 1977
J= 1, and one J = 0 channel belong to the 2 P1/2 (lower)ion core. Fifteen of these channels result from ns ornd configurations, whereas two J=3 and one J=2 chan-nel belonging to 2 P '/ 2 and one J= 3 channel belongingto 2 P /2 are from ng configurations. In addition, sever-al levels of the interloper configuration 5s5p3 exist inthe same energy region as the levels from the configura-tions just discussed.
The AJ selection rule limits the dipole transitionsbetween the ground term, 5p 2 3P, and the 19 channelsassociated with configurations (a) listed above to 35spectral series. The Sni ground term is regular with3 P1 - 3 Po and 3 P2 - 3
Po separations2 of 1691. 806 and3427. 673 cm-1 , respectively, whereas the Snii 5p2 P3/ 2 -2P 1 2 spacing2 is 4251. 494 cm-'. Hence, several ofthese 35 spectral series from the three 5P2 3 p levels ofSni converge to each of six apparent convergence limitsbetween 1791.95 and 1575.19 A. Finally, the AJ selec-tion rule limits the allowed transitions between the5p 2 1D2 level (which is2 8612. 955 cm-' above 5p 2 3PO) andthe channels from configurations (a) to 17 spectralseries, which can converge to either of two apparentseries limits at 1975. 51 and 1822.45 A.
The multichannel, two-limit approach to the problemof interpreting the many interactions among the energylevels converging on the two ground-state levels ofSnii is the same as that discussed8 in detail for theanalogous channels in Ge I. Briefly, the interactionsbetween channels (level series plus their continua) areperiodic because level series belonging to channelsconverging on different ion core limits periodicallycross. The restriction that interacting levels have thesame parity and J value permits the consideration ofthe resulting channel mixings for each J value as anindividual problem. The possible energy levels corre-spond to the points of intersection of functions ni=G(n*) and nH =f(n2*). The first function can be repre-sented8 -10 by
Hi =G(n2*)=n2*(l -n * Ay / 2,
while nH =f (n*) is the solution of
2
(1)
(2)
In Eq. (1) the quantities nl and n2* are the effectivequantum numbers for each level based on the two pos-sible ionization energies, El.. (for 5Pi2P 1/2 ) and E2 ., (for
Copyright C 1977 by the Optical Society of America 607
5p 2P '/ 2 ), with A = (E2.c,- E1.) R -1 = 0.0387426 using Rs.=109 736. 809 cm-'. In Eq. (2) the Ui,''s are matrixelements for the transformation between the close-coupled and loose-coupled representations, 1 the g,u's areeigenquantum defects" for the close-coupled eigenstates,and n is n* or n* depending upon which state of the ionthe ith loose-coupled state is built.
In the Lu-Fano4 graphical approach to a two-limitcase, each energy level corresponds to a point in aneffective quantum number space, a two-dimensionalspace where nl and n* are the ordinate and abscissa,respectively. Empirical procedures for treating many-channel, two-limit problems involve mapping the points(nl, n4*) for all observed levels of the same J and parityonto a unit square [i. e., a mapping onto (01 )modl VS
(n*)modl]. To employ such procedures it is essentialto first identify enough energy levels by conventionalmethods to sketch the shape of f in the unit square.These approximate functions can be used with Eq. (1) toestimate the energies of unidentified levels. As addi-tional levels are identified, the empirical f functionsare refined and the entire process iterated until no newenergy levels can be found. The reader is referred toRef. 8 for a detailed discussion of these procedures.
The transition probability between a ground level anda Rydberg level depends on dipole integrals between thetwo levels. Because the major portion of the ground-state wave function extends only a few angstroms fromthe nucleus, it is the close-coupled part of the Rydbergelectron's wave function which makes the largest con-tribution to the transition probability. If the otth close-coupled eigenstate has a dipole integral Da with a givenground level, the oscillator strength between a groundlevel and some Rydberg level is given9" 0 by
f = N(Z (Ma Da)), (3)
where Nis a normalization factor and the M,'s are mix-ing coefficients" which specify the specific linear com-bination of close-coupled states making up the Rydberglevel. The mixing coefficients M, can be computedfrom the expansions"0
M. = Ci( Z ) -1/ (4)
where the Cia's, which are functions of n, and n?', arethe cofactors of the ith row and ath column of the deter-minant in Eq. (2).
Breakdowns in the two-limit, multichannel behavioroutlined in the preceding paragraphs are expected when-ever there are appreciable interactions with levels out-side the channels under consideration. Typically suchdeviations occur for levels with low n values and in thevicinity of interloper levels.
EXPERIMENTAL PROCEDURES
The experimental apparatus used in this work hasbeen described in detail, 12 and the procedures used toobtain spectra of Sni are analogous to those used to ob-tain highly dispersed absorption spectra6' 8 of Si i andGe i. Briefly, tin'3 was heated to temperatures in the
range 1050-1650 'C in an evacuable King furnace sys-tem with a 122 cm long hot zone. Absorption spectrawere obtained from a single pass through the furnaceusing a microwave-excited xenon lamp'2 to providebackground continua. Spectra were photographed onKodak SWR plates in the third order of a 6. 6 m spec-trograph with a reciprocal dispersion of 0. 41 A/mm.Most experiments were performed with flowing argonin the furnace at pressures in the 0. 1-0.2 Torr range,although argon pressures as high as 20 Torr were em-ployed in a few cases.
The emission lines of iron used as reference stan-dards and the procedures for data measurement and re-duction are the same as those described previously. 12
In addition, iron and germanium were added to severalsamples of tin and a number of exposures taken whichcontained spectral lines for all three elements. Thewell-determined absorption lines of germanium8 andiron'4 were used as additional internal standards in thedetermination of the absolute wavelengths of the Snispectrum. The uncertainties in the wavelengths ofsharp, unblended lines appear to be ± 0.0015 A or bet-ter (corresponding to ± 0. 06 cm 1l at 1650 A), althoughthe uncertainties associated with weak, diffuse, orblended features are much larger.
RESULTS
Once a list of observed Sni lines had been prepared(see Table I), the initial phase of the analysis pro-ceeded conventionally. The energy differences betweenthe 5S25p2 3po, 3P1 , 3P2, and 1D2 levels and the AJ se-lection rules were used to determine the J values andenergies of as many levels as possible. Spectra as-sociated with levels above the 5p2 P'1/2 limit exhibitautoionization effects analogous to those discussed forGe i (see Fig. 3, Ref. 8 and corresponding descriptions),and converge regularly on the 5p2 P, 1 2 limit. A value ofE2.. = 63 484.18 ± 0.10 cm-' was obtained using two 3Po-J= 1 series which were well developed. This value,along with the known 2 5p 2 p0 splitting of Sn ii, givesEl..= 59 232. 69 ± 0. 10 cm-'. These ionization energieswere consistent with results observed from other chan-nels observed above the 5p2 P0
1/2 limit and with themultichannel treatment of the levels observed belowthe first limit. The conventionally identified levels ob-served below the 5p2 P'1 /2 limit were sorted by J andused to construct preliminary plots of ("ln)modl VS(nt)modl. Although incomplete, sufficient data wereavailable to sketch the empirical f curves for each valueof J. The iterative procedure described above was thenapplied to complete the analysis.
Table II lists all of the odd-parity energy levels ofSni which have been characterized experimentally, to-gether with the J, nl, and n2* values (columns 2 through4, respectively) for each level. A numerical value incolumns 5 through 8 indicates that a transition from5p2 3po,2 or 1D2 to the level in question has been ob-served in the present work, with additional commentsappearing in subsequent columns. The n* and J valuesin Table II serve to uniquely identify the upper levelsof the transitions in the line assignments appearing inTable I.
608 J. Opt. Soc. Anm, Vol. 67, No. 5, May 1977 Brown et aL 608
TABLE I. Observed absorption lines of Sn i.
I a WAVELENGTH WAVOOWBE CLASSIFICATIO~b
30
35
3
10
0
3
15
15
0s
0
0
3
75
4
S
12
4
4
0
4
4
0
4
4
4t
80
0
3
0
0
3
0
0
3
0
3
0
0
3
0
3
0
0
3
3
3
3
2
2
2
2
2
2
2
22
2
2
2
2
2
2
2
0
(A)-
204 1. 573
2041. 312
2031.108
2029. 259
2027. 612
2027. 479
2022. 447
2021. 481
2020. 695
2016.401
2008. 721
2006. 291
2002.57
1999.078
1996. 028
1994. 975
1993.711
1993. 4 18
1991. 868
1991. 763
1990. 081
1989.90
1988. 616
1987. 340
1986.30
1986. 228
1986.08
1985. 259
1984. 4121984. 171
1983.76
1983. 668
1983.52
1983.16
1983. 012
1982.87
1982.66
1982. 4131
1982.177
1981. 915
1981.78
1981.72
1981. 456
1981.28
1981. 043
1980.94
1980.90
1980. 668
1980. 336
1980. 033
1979. 758
1979. 510
1979.279
1979.069
1978. 879
1978. 702
1978.536
1978.386
1978. 2481978. 116
1977.996
1977. 886
1977.777
1977.6'79
1977. 589
1977. 501
1977. 17
1977. 342
1977. 270
1977. 202
1977. 137
1977. 079
1977. 020
1976.965
1a WAVELENGTH1CHA I
48981. 84
48988.10
49234.16
49279. 07
4931 9.10o
49322.334944S.OS
49468.68
49487.93
49593.30
49782.92
49843.21
4993S.8
50023.06
S0099.50
50125.94
50157.73
50165.09
50204. 13
50206.78
50249.22
50253.7
50286.22
50318.52
50344. 8
50346.68
50350. 4
50371.26
50392.77
50398.88
SO409.2
50411.66
50415S.4L
50424.5
50428.34
50432.0
S0437.3
50443.12
50449.59
50456.25
50459.6
50461. 2
50467. 94
30472.3
50478.45
S0481.0
50482.2
50488.02
50496. 48
SOSO1. 22
50511.23
50517.56
50523. 46
50528.80
50533.65
50538.19
50542.42
50546.26
50549.7850553. 14t
50556.22
50559.02
50561.82
50564. 31
50566.62
50568.88
50571. 03
50572.93
50574.78
50576.52
50578.18
50579.66
50581. 17
50582.59
CLPASS IFICST100
3p, -I
3P2 - 2
-P 2
-P~2
'02 -I
21P2 - 1
'02 - 2
'0)2 -2
'02 2
'02 3
'02 3
'02 - 2
102 -
'02 -3
'02 -2I
'02 -3
'02 1
'02 3
0D2 -
1 -3 3
'02 -3
'02 -3
0D2 -1
'02 - 3
'2 - I
'02 -1
'02 -3
'02 -1
'02 - 3
'02 1
'102 I
'102 I
I, 3
'D2 3
'02 -3
'02 -3
'02 -3
'02 - 3
'02 - 3
'02 - 3
'02 -3
'D2 - 3
'02 - 3
'02 -3
'02 - 3
-D 3
'D2 -3
-D 3
'02 -3
'02 -3
'02 3
'02 -3
'02 -
2.7508
3. 1487
4.4122
3.1909
2.9661
4.4471
4.41970
2.9841
4.5149
3.2385
3. 0228
4. 6718
4.7152
4. 7576
4.7956
2. 8662
41.8251
3. 3308
3.3374
4. 8504
4. 8726
4. 8750
41.8922
4. 9096
41.9239
4. 9248
4. 9269
14. 9382
4.9501
3.3709
4. 9592
4. 9606
4. 9626
4. 9676
4. 9699
4.9718
4. 97149
4. 9782
4. 9817
4. 9856
4. 9872
41.9884
4.9922
4. 9946
4. 9981
4. 9995
5. 0003
5.0036
5.00841
5. 0128
5. 0169
5.0205
5. 0239
5. 0270
5.0299
5. 0325
5. 0349
5. 0372
5. 03925.0412
5.0430
5.0446
5. 0462
S. 0477
5. 0491
5. 05014
5. 0516
5.0528
5. 0538
5. 0549
5.0558
5.0567
5.0576
5. 0584
WAVELENGTH WAVETHJAAER CLASSIFICATIO~b(RI (C-~') 3 .J n 2
1840.67 54328.0 '02 - 2 14.2100
0
0
0
0
100
15
60
100
75
6
25
12
75
5
soc
30
100
500
40o
80
90
20
15
Il00'
300
1 2
10a
350
400
S
200
100b0c
1 5
250
150
220
70
1000400
50
100
7 0
200
500oc
150
b0c
30
S
125
Sc
110
350
300
450
250
f
300
1 0
1 5
50
40
30
(RI
1976. 9151976. 862
1976. 819
1976.774
1976. 730
1976. 653
197 1. 450
1969.121
1960. 206
1952.126
1952.059
1949.863
1948. 210
1945. 430
1942. 700
1936. 274
1933.149
1929.0
1927. 948
1926. 746
1925.297
1913.484
1911. 552
1909. 210
1907.416
1904. 038
1900.0
1897. 288
1895. 811
1893. 413
1891. 421
1888.131
1886.03
1886.03
1882. 585
1881.36
1878. 586
1878.1
1874. 333
1873. 312
1872. 273
187 1. 268
1870. 3814
1868.73
1865.923
1865. 516
1863. 354
1862.992
1862. 916
1861. 418
1860. 325
1860.0
1859. 772
1858.0
1856. 804
1853. 675
1854. 253
1853.41
1853.191
1851. 969
1848. 930
184. 769
18148.36
188. 236
184. 208
1847. 967
1847. 242
1846. 286
1845. 855
18144.4L7
1844. 356
1843.55
1841 * 01841. 306
609 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Bone l 0Brown et aL 609
WAVENUJAER(cm-,)
50583.8650585.23
50586. 31
50587.47
50588.60
50590.5S7
50724.09
50784i.09
51015.03
51226.19
51227. 95
51285.65
51329.17
51402.52
51474.74
51645.58
51729. 08
51839
51868.61
51900.98
51940. 05
52260.70
52313.50
52377.68
52426.96
52519.95
52632
52706.81
52747.87
52814q.68
52870.31
52962.42
53021.3
53021.3
53118.46
53153.0
53231.52
53244l
53352.31
53381.38
534l1. 01
534I39.70
53464.95
53512.3
53592.77
536041.46
53666.67
53677.10
53679.30
53722.50
53754.04
53762
53770.02
53820
53855.99
539416.90
53930.07
53954.6
53960.97
53996.57
54085.35
54090.04
54101.9
54i1 05. 64
54106.45
54113.53
54134.77
54162.8054175.45
54216.1
54219.4q8
54243.2
54306. 554309.27
3 J.
'02 - 3'02 - 3
'02 - 3
'02 - 3
'02 - 3
'02 - 3
3,- 2
~'f2 - 2
'P1 -I
'P2 - 33,- 0
3P2 - 2
'P1 3
3P2 I
'3P2 I
'3P2 - 2
3p, -I
3P, - 2
3P2 - 1
'P2 - 3
'P2 - 2
3P2 - 2
P,- 2
'02 - 3-3p5
3P2 - 3
3P2 - 1
3P2 - 33P2 -1I3p' -I
3P, - 2
'P2 - 2
'02 - 3
3P2 -'02 - 2
3P2 - 23,- 1
'P2 - 3
3 - 03P, - 1
-O 3
-P, 2
3P2 I
'P2 -2
'P2 I
3P2 -2
3P2 - 3
'02 - 1
'02 - 3
'0)2 -2
'P2 -2
IF' 0
'02 3
'P2 -3
3P2- 3
'02 I
-P, 2
'P2 I'P,- 2
'1P2 -
'132 -3
'02 -2
'02 I
'02 -3
n l 2
5. 0592
5. 0600
5.0606
5. 0613
5. 0620
S. 0631
3.1I487
3. 4402
3.1909
3. 5252
3. 2229
3.5372
3. 2385
3. 5610
3.02283.6120
3. 6301
6.018
3. 6609
3. 3308
3. 3374
3.7518
3. 7646
3. 7803
3. 7925
3. 4402
7.001
3.1909
3. 8749
3. 8927
3. 9077
3. 9330
3. 2385
3.5372
3. 9770
7.992
4. 0098
8.212
4. 0458
3. 6120
4. 0636
3. 6246
3.6301
8.986
3.3308
3.6609
4.1441
4.11475
4. 1482
4. 1623
4. 1727
9. 944
9. 9826
10.217
41.2069
4. 2381
3.7360
10.942
10. 9799
3.7518
4.2869
4. 2886
11. 942
4. 2942
11. 9786
3. 7803
4. 3048
3. 7925
4. 3197
12. 941
12. 9766
13.219
13. 939413.9753
25
300
25
300
2C
20
4020
20
20
15
40
12
120180
2010
12
100
20
120
18
7
603S
62
20
10
00d
0
0
0
25
0
0
0
0
0
20
90
1840.003 54347.75
1838.92 54379.6
1838.850 54381.82
1838.32 54397.4
1837.575 54419.55
1837.254 54429.06
1836.92 54438.9
1836.849 54441.06
1836.641 514447.23
1836.39 54454.6
1835.856 54470.51
1835.192 54490.21
1834.82 54501.2
1834.606 54507.62
1833.806 54531.41
1833.50 54540.6
1832.634 54566.27
1832.37 54574.2
1831.636 54596.00
1831.39 54603.3
1830.777 54621.61
1830.58 54627.5
1830.489 54630.22
1830.033 54643.81
1829.86 54649. 0
1829.385 54663.18
1829.255 54667.06
1829.049 54673.22
1828.89 54678.0
1828.817 54680.15
1828.38 514693.3
1828.316 54695.13
1828.210 54698.31
1827.974 54705.38
1827.874 54708.38
1827.631 541715.64
1827.52 54718.9
1827.476 54720.27
1827.123 54730.86
1826.805 54740.39
1826. 541 54748.31
1826.261 54756.68
1826.026 54763.74
1825.812 54770.15
1825.616 54776.04t
1825.437 54781.40
1825.275 54786.26
1825.125 54790.76
1824.985 54794.96
1824.854 54798.91
1824.736 54802.44
1824.626 54805.76
1824.524 54808.81
18214. 427 5481 1.72
1824.338 54814.41
1824.255 541816.91
1824.179 54819.19
1824.106 54821.38
1824.037 54823.45
1823.972 54825. 401823.913 54827.19
1823.86 54828.8
1823.80 54830.5
1823.720 54i832.97
1823.66 54834.9
1823.62 54836.1
1823.57 54837.4
1823.54 54838.5
1823.50 54839.5
1823.47 54840.6
1823.009 54854.35
1822.838 54859.51
1822. 667 54864.66
'P2 -2
'02 - I
'0)2 -3
'02 -2
'P2 -3
3P2 -2
3P2 - 3
'02 -2
'02 -3
'02 -2
3 - 1
'02 - 3
02- 2'032 - 3
'02 - 2
'02 - 3
'02 - 2
'02 - 3
'02 - 2
'P2 - 2
'02 - 3
'02 -3
'P2 -3
-0 3
'02 -3
'02 3
3P2 -3
'02 -3
'02 - 3
'02 - 3
'02, - 3
'02 - 3
'02 - 3
'02 - 3
'02 - 3
102 - 3
102 - 3
'02 - 3
'02 - 3
'02 - 3
'02 - 3
'02 - 3
'02 - 3
'0, - 3
'D2 - 3
'02 -3
'02 -3
'02 3
'D2 -3
'02 - 3
'0)2 - 3
'02 - 3
'fP2 - 2
'02 -3
'02 -3
'02 -3
'02 -3
J02 -3
-P 2
3P2 -2
'P2 -3
4. 3844
14. 939
14. 975
15.22
4. 4122
4. 4159
15. 9739
15. 974
4. 4231
16. 234 .4323
16.972
17.22
4. 4471
17. 972
18.22
18.972
19.22
19. 970
20.24
20. 969
21. 22
4. 4970
21. 969
22.22
22.969
3. 9244
4. 51I49
23. 833
23. 96724. 836
24. 966
3. 9330
4. 5285
25. 963
4. 5328
26. 846
26.965
27. 966
28. 963
4. 5468
30.96
31.96
32.95
33.96
34.95
35.94
36.94
37.94
38.95
39.94
40o.95
141.*93
42.95
43.95
44q.94
45s.94
46. 94
47. 93
ti8.95'49.95
50.92
51.99
4. 5835
55.0
55.9
57.0
57.9
58.9
59.9
3. 9770
4. 5952
14. 5974
TABLE I. (Continued).
18 W4AVELENITK WAVD&WEM CLASSIFICATIOPt11 (c.(3) 9 J Y
25
30
25
300
25
30
35
15
30
1200
50
25
35
25
800
255
40
55
4
3
15
20
0u45
60
4
3
4
22
I 009
4
3
2
18
80
40
250
1 oof1000
50
2
90
45
3
15
80
S
45
4
80
S
40
3
4
75
40
1 0
70
40
3
20
60
40
35
25
4030
40
1821. 615
1820.S590
1819. 409
1819. 261
1817. 822
181 7. 458
1817. 239
1816. 808
1816. 112
1815S. 766
1815. 272
1 815. 018
1814. 198
1814. 080
1814.031
1813. 016
1812. 6851812. 244
1811. 321
1811. 148
1810.914
1810. 144
1 809. 908
1809. 549
1809. 055
1808. 918
1 808. 81 4
1808. 409
1807. 777
1807. 626
1807. 315
1806.912
1806. 369
1805. 847
1805. 745
1805. 473
1805. 312
1805. 220
1804.972
1804. 659
1804. 634
1804. 560
1804. 245
1 803. 931
1803. 786
1803. 279
1803.1I55
1802. 911
1802. 725
1802. 657
1802. 564
1802. 095
1801. 760
1801. 678
1801. 569
1801. I51
1801. 087
1800. 820
1800.763
1800.635
1800. 611
1800. 221
1800. 011
1799.966
1799. 825
1799. 474
1799. 322
1799. 269
1799.140
1798. 825
1798. 736
1798. 6511798. 538
1798. 249
54896.34
54927.25
54962.90
54967.37
5501 0. 88
55021.90
55028.52
55041.59
55062.69
55073.18
55088. 18
55095.88
55120.77
55124.36
551 25. 86
55156.72
55166.7955180.21
55208.32
55213.60
55220.74
55244.23
55251.42
55262.39
55277.48
55281.68
55284.85
55297. 21
55316.57
55321. 16
55330.69
55343.05
55359.68
55375.69
55378.82
55387. 14
55392.08
55394. 91
55402.53
554 12. 14
55412.89
55415. 16
55424.86
55434.50
55438.94
55454.53
55458.3455465.86
55471.56
55473.66
55476.54
55490.98
55501.27
55503.83
55507. 16
55508.82
55522.03
55530.27
55532.03
55535.96
55536.71
555148.7255555.21
55556.60
55560.96
55571.78
55576.50
55578.14
55582. 11
55591.85s
555941.59
SS597. 0355600.70
55609.65
P2- 3
'2- 2
~1P, - I3p, - 3
P2- I
P2- 23P2 - -3
I - 13,- I
3,- 2
P2- I
32- 2
3F2- 3
P2- 23p~o - 1
P2- I
32- I
3P'2 - 2
P2- 3
32- 2
32- 3
3P'2 - 2
3P2 - I
32- 2
32- -3
3P'2 -2
3P'2 -3
32- I
P2- 2P2- 3
3P2 -2
l'P2 - 3
32- 23P2 - 1
3P2 - -3
-' 2
-P 2
P2- -3
P2- 3
32- 2
32- 2
3,- 2
'P2 -
3 - 3
~'P2 I
'P2 -2
3P2 -3
-P 2P2 2
-F' 1
-F1 3
3P2 I
3P 2
3P'2 2
-P 3
3 - 2
3P2 I
-P 3-P 2-p 1
4.6115
4.6254
4.6416
4i.0098
4.6636
4.6687
14.6718
4.6778
4. 6877
3.6120
4. 0458
4.7034
4. 712
4.7169
4. 7176
3. 6301
4. 73734. 7438
4. 7576
4. 7602
4. 7637
4. 7753
4. 7789
4. 7843
4. 7940
4. 7956
4. 801 8
4.8116
4.8139
4. 8188
4. 8251
4. 8336
4. 84 19
4. 84354. 8478
4. 8504
4. 8519
4. 1441
4. 1472
4.1475S
4. 1482
4. 8675
4. 8726
4. 8750
4. 8832
4. 16234. 8892
4. 8922
4.8934
4. 8949
4. 9026
4. 9081
4. 9096
4. 9113
4. 9123
4. 9194
4. 9239
4. 9248
4. 9269
4. 9274
4. 9340
4. 9375
4. 9382
4. 9407
4. 9466
4. 9492
4. 9501
4. 9523
4.2069
4. 9592
4.96064.9626
4. 9676
la1 WAVEElNGTH WAVE~NLoIME CuASIFICAnIDNb(A) (C.-) 9 J . n '
35
35
410
25
35
35
7
35
30
35
25
0
8
30
20
0
15
30
20
0
20
25
25
15
125
30
20
15
30
15
Sf
30
15
30
10
25
10
25
10
20
10
20
8
18
7
15
S
13
4
12
3
1 1
2
10
2
9
80
7
Of
6
S
4
14
3
33
3
1798. 118
1798. 010
1797. 754
1797. 829
1797.6411
1797. 541
1797. 437
1797. 308
1797. 216
1797.124
1797. 058
1796. 913
1796. 752
1796.703
1796. 562
1796. 500
1796. 418
1796. 380
1796. 247
1796. 195
1796. 118
1796. 086
1796. 042
1795.96
1795. 917
1795. 888
1795. 846
1795. 820
1795.707
1795. 673
1795. 601
1795. 574
1795. 444
1795.378
1795.357
1795. 238
1795.172
1795.152
1795. 049
1794. 988
1794. 877
1794. 816
1794. 719
1794. 659
1794.573
1794.517
1794.4q39
1794. 384
1794. 314
1794. 261
1794. 198
1794. 149
1794. 092
1794. 044
1793.993
1793. 946
1793. 900
1793. 854
1793. 814
1793. 770
1793. 732
1793.692
1793.6561793.62
1793. 586
1793.54
1793. 519
1793. 456
1793.398
1793.3411
1793.289
1793. 2401793. 192
1793. 148
55613.70
55617.04
55624.96
55622.63
55628.47
55631.56
55634.78
55638.77
55641.60
55644.45
55646.50
55650.99
55655.99
55657.51
55661.88
55663.79
55666.33
55667.51
55671.63
55673.25
55675.63
55676.62
55677.99
55680.5
55681.86
55682.76
55684.05
55684.88
55688.37
55689.43
55691.67
55692.49
55696.54
55698.58
55699.24
55702.93
55704.95
55705.59
55708.78
55710.68
55714. 12
55716.02
55719.03
55720.90
55723.57
55725.30
55727.72
55729.43
55731.60
55733.25
55735.20
55736.74
55738.51
55740.00
55741.59
55743.04
55744.47
55745.88
55747.15
55748.51
55749.68
55750.94
55752.0455753.3
55754.23
55755.6
55756.32
55758.25
55760.07
55761.84
55763.46
55764.9955766.48
55767.85
3P2
'P2
3'P2
31'2
JP2
3P23P 2
:3p,
3P2
3P2
3P2
3P2
'P2
P21~
3P2
3P2
'p2
'P23P2
3P2
3P2
'3P23P23P2
3P2
3'P2
-3
-2
-2
-1
-3
-2
-1
-2
-3
-2
-1
-2
-2
-1
-2
-3
-2
-1
-2
-3
-2
-1
-2
-2
-3
-2
-2
-1
-1
-3
-2
-1
-3
-2
-1
-3
-2
-1
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3
-2
-3-2
-3
-2
-3
-3
-3
-3
-3
-3
-3
-3
jO WAVELtoGT WVMvoJtju CussIFICIejiub(A)1 (C.-') 9 J. n I
4. 9699
4. 9718
4. 9762
14. 9749
4. 9782
4. 9799
4. 9817
4. 9839
4. 9856
4. 9872
4. 9884
4. 9909
4. 9937
4. 9946
4.9971
4. 9981
4.9996
5. 0003
5.0026
5. 0036
5. 0049
5. 0055
5.0062
5. 0077
5. 0084
4. 2381
5.0097
5.0102
3. 7518
5.0128
5. 01 41
5. 0145
5. 0169
5. 0181
5.0 185
5. 0205
5. 0217
5. 0221
5.0239
5. 0250
5. 0270
5. 0281
5. 0299
5. 0310
5.0325
5.0335
5. 0349
5. 0359
5. 0372
5. 0381
5.0392
5. 0402
5.041il2
5.0421
5.0430
5. 0438
5. 0446
5. 0455
5.04q62
5.04q71
5. 0477
5. 04i85
5. 04915. 0499
5.0504
5.0512
5.0516
5. 0528
5. 0538
5. 0549
5. 0558
5. 0567
5.0576
5.05841
2
2
2
2
2
2
2
2
0
IOOO
300
200
100
25
0u
35
300
200
50
300
20
500
240
100
50
20
30
75
3u
85
150
40
40
85
40
90
40
80
65
90
80
4090
60
70
120
35
IOC
50
4u
35
45
25
50
9OOC
40
25
35
80
120
60
60
45
30
35100
20
1793.107
1793. 066
1793. 027
1792. 991
1792. 957
1792. 924
1792. 891
1792. 862
1792. 835
1792. 809
1792. 780
1792. 757
1792. 733
1792.1
1790.783
1789. 850
1788. 885
1788. 5441
1787.38
1785. 330
1783. 051
1780. 470
1779. 157
1778.144
1778. 019
1774. 114
1773. 360
1772. 771
177 1. 432
1770. 4197
1770. 407
1767. 758
1766. 928
1766. 376
1765.780
1764. 939
1764. 880
1764. 817
1763. 707
1762. 326
1761. 872
1761. 666
1761. 376
1760.607
1760. 297
1759. 580
1758. 809
1758.7
1758. 6511757. 388
1757.141
1756.973
1756. 106
1755. 723
1755.4
1754.777
1754.602
1754. 512
1754. 440
1753.975
1753. 847
1753.5
1752. 632
1752.382
1'752.339
17 51. 959
1751. 488
1751. 51
1751. 100
1750. 864
1750. 636
1750. 6091750.370
1749. 868
55769.13
55770.41
55771.62
55772.72
55773.80
55774.82
55775.841
55776.73
55777.57
55778.40i
55779.28
55780.01
55780.75
55800
55841. 48
55870.62
55900.755591 1.40O
55947.7
56012.05
56083.64
56164.96
56206.39
56238.42
56242.38
56366. 17
56390.12
56408.88
5645 1.49
56481.32
56484. 19
56568.84
56595.40
56613.07
56632.19
56659.18
56661.08
56663.11
56698.77
56743.20
56757.81
56764. 45
56773.78
56798.58
56808.61
56831.75
56856.66
56860
56861.7656902.63
56910.63
56916.07
56944.18
56956.59
56967
56987.30
56992.98
56995.92
56998.25
57013.37
57017.52
57028
57057.04
57065.19
57066.57
57078.97
57094.31
57095.52
57106.95
57114L. 66
57122.08
57122.9857130.78
57 147. 16
3'P2 - 3
P2- 3
32- 33P'2 - 3
'P2 - 3
-'P2 -3
-p 3
-P 3-P 3
-P 3
P2- 332- 3-
P,- 3
p,- 0
3P2 - 1
-P, 2
-P, 2
3P, I
3po -1
-P 23p9 -I
3,- 2
3,- 1
1P I - 03p3 - I
3,- 2
-P 2
3p, I
3P, I
-P 2
-P 2
3p, I3P, 2
-p 0
3p, I
-P~23P2 -
-p, 13P, -
3P 2
3P2 - 1
1,- I
I3- 03,- I
3p 2 -2
3P 2
-P 33
p, -I
-p 03p, I
-P 2
3P, 2
1 - 0
3P, -2
3,- 2
5. 0592
5. 0600
5. 0606
5.0613
5. 0620
5.0625
5.0631
5. 0637
5.0642
5. 0647
5. 0652
5.0656
5. 0660
5.079
4. 29142
4. 3048
4. 31 58
4.3197
5.1680
4. 3844
4. 4159
4. 4323
4. 4450
3. 8927
4. 4970,
3. 9330
4. 514q9
4.5328
4. 5455
41.5468
4. 5835
4i. 5952
4.6115
4. 0098
4. 6245
4. 6254
4. 6416
4.6619
4. 6687
4.6718
4. 6761
4. 6877
4. 6924
4i. 7034
4i. 7 152
5.861
4. 71764. 7373
4. 7412
4. 7438
4. 7576
4. 7637
5.960
4. 7789
4. 7832
4. 78436.0052
4. 7940
6.018
4.8139
4.8181
4. 81 88
4. 8251
4.1441A
4.8336
4.14 82
4. 8435
4. 8473
4. 8478
4.8519
4. 8604i
610 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Bone l 1Brown et aL 610
TABLE I. (Continued).
1a WAVELEWG.i,(RA
35 1749. 395
20f 1749.189
4S 1749. 171
120 1749. 021
So0 1748.9930 1748. 547
40 1748.162709 1747.965
1 1747.96
120 1747. 873
30 1747.432
35 1747.120
60 1746.939
100 1746.887
30 1746. 482
30 1746.232
60 1746.063
90 1746.037
120 1745.699
30f 1745.669
5 1745.475
150 1745. 300
25 1744.967
30 1744.825
150 1744.654
25 1744.3S7
40 1744.274
120 1744.088
100 1743.815
100 1743.590
80 1743.421
10 1743.350
80 1743. 149
70 1743.051
8 1742.933
75 1742. 757
65 1742. 696
5 1742.561
70 1742.408
60 1742. 362
5 1742. 230
65 1742.095
55 1742.058
5 1741.933
60 1741.813
50 1741.781
5 1741.742
4 1741.664
S0 1741.S57
40 1741.531
4 1741.423
45 1741.326
35 1741.302
3 1741.203
40 1741.116
25 1741.094
3 1741.000
3S 1740.925
25 1740.904
2 1740.820
35 1740.749
20 1740.731
2 1740.652
20 1740.589
IS 1740.568
1 1740. 500
20 1740. 442
1 740.360
18 1740.307
1 1740.230
18 1740.182
0 1740.112
17 1740. 066
0 1740.004
lcui' I
57162.63
57169.34
S7169.94
S7174. 84
5717657190.35
57202.94
57209.38
57209.4
57212.38
57226.83
S7237.OS
57242.9757244. 69
57257.96
57266.15
S7271.69
57272.56
57283.65
57284.63
57291.00
57296.75
57307.66
57312.35
57317.96
57327.72
57330.44
57336.56
57345.53
57352.94
57358.49
57360.8157367.46
57370.66
57374. 54
57380.33
57382.37
57386.81
57391.83
57393.35
57397.71
57402.15
57403.37
57407.48
57411.45
57412.50
57413. 77
57416.3757419. 88
57420.75
57424.30
S7427.49
57428.28
57431.57
57434. 42
57435.14
57438.2557440.72
57441.4357444.20
57446. 54
S7447. 1357449.72
S74S1. 81
57452.5257454.75
57456.68
57459.3857461. 14
57463.66
57465.26
57467.58
57469.07
57471. 14
Ia WIVELENGTH WFIVEMMBER(Rl (CH, )
611 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
CLASSlFlCRATrOb9 J' n2^
, - I 4.86853P, - 0 4.8721
IF, - 1 4.8724
, - 2 4.8750
- 2 6.1713, - 2 4.8832
, - 1 4.8899
+, - 1 4.8934
3p - 0 4.8933
P, - 2 4.8949
P, - 2 4.9026
, - 1 4.9081
, - I 4.9113
- 2 4.9123
, - 2 4.9194
, - 1 4.9239
, - 1 4.9269
P, - 2 4.9274
'o - 1 4.20693P, - 2 4.9340
3P - 1 4.9375
, - 2 4.9407
P, - 2 4.9466
P, - I 492470
, - I 4.9523
, - 2 4.9577
, - I 4.95923P, - I 4.9626
P, - 1 4.9676
, - 1 4.9718
3P, - 1 4.9749
, - 2 4.9762
3PI - I 4.9799
, - 1 4.9817
3 - 2 4.9839
P, - 1 4.9872
If' - I 4.9884
P - 2 4.9909
P, - 1 4.9937
.P, - I 4.9946
3, - 2 4.9971
1 - I 4.9995
3, - 1 5.0003
, - 2 S.0026
, - 1 5.0049
I3, - 1 5.0055
- 2 5.0062
, - 2 5.0077
, - 1 5.0097
3 - 1 5.0102
3P - 2 5.0122
- 1 5.0140
- 1 5.0145
- 2 S.0164
. - 1 5.01803PI - 1 5.0185
- 2 S.0203
. - 1 S.0217
3 - 1 5.0221
+. - 2 5.0237
3P, - 1 5.02503p - 1 5.0254
- 2 5.0269
'PI - I 5.02813P, - 1 5.0285
3P, - 2 5.0298
3P, - 1 5.03093P, - 2 5.0325
3P, - 1 5.0335
3p, - 2 5.0350
3p; - 1 5.0359
3P, - 2 5.03723p - 1 5.0381
3P, - 2 5.0393
I WRVELENGTH(R)
16 1739.960
0 1739.901
1 S 1739. 860
Of 1739.81
IS 1739. 768
0 1739.71
14 1739.683
0 1739.64
13 1739.603
13 1739. 527
12 1739.457
12 1739.392
11 1739.330
1 11739.273
11 1739.218
10 1739. 167
10 1739.119
9 1739. 073
9 1739.030
9 1738.989
8 1738.950
8 1738.914
7 1738. 879
7 1738. 846
6 1738.814
6 1738.785
5 1738.755
5 1738.729
S 1738.704
5 1738.678
4 1738.6SS
4 1738. 632
4 1738.610
3 1738.591
2 1738.57
2 1738.55
I 1738.S3
1 1738.51
1 1738.50
1 1738.48
150 1737.244
120 1736.016
SOO5 1733.61
5 0 0 h 1729.57
140 1727. 169
2 0 h 1726.41
100 1726.063
IS0 1719.889
1 5 d 1719.03
90 1718.921
20C 1716.2
20C 1714.6
100 1714.560
3 0 0 h 1714.13
5S 1713.92
80 1713.651
3 0 h 1711.91
60 1710.876
80 1709.683
90 1708.714Iod 1707.04
70 1706. 647
80 1706.255
IOOC 1704.9
60 1704. 183od 1704.01
60 1703.866
2 0 0 h 1703.64
20C 1703.5
60 1702.161
10 h 1702.04
60 1701.885
70 1700.493
70 1700.251
WRVENUtMER(cHm I
57472.60
57474.52
57475.88
57477. 7
57478.92
57480.7
57481.75
57483. 3
57484. 39
57486.88
57489.20
57491. 35
57493. 40
57495.30
57497.10
57498.78
57500.39
57501. 90
57503.32
57504.67
57505.96
57507. 17
57508.32
57509.42
57510.4S
57511 .43
57512.40
57513.28
57514. 1 1
5751 4. 97
57515.7357516.48
57517.21
57517.85
57518.5
57519. 2
57519. 8
57520.4
57520.9
57521. 4
57562.45
57603.16
57683
57818
57898.22
57923. 8
57935.3358143.30
58172.2
58176.02
58268
5832158324.00
58338.558345. 8
58354.93
58414.3
58449.60
S8490.37
S8523.55
58580.9S8594.43
58607.87
58653
58679.13
58685.0
58690.06
58697.7
58703
58748.86
58753.0
58758.39
58806.48
58814. 84
CLRSSIFICSTIONbg J. n2
3p, - 1 5.0402
3p, - 2 5.0413
3P, - 1 5.0421
3P, - 2 5.04313p - 1 5.0438
3P, - 2 S.04493
PI - 1 5.0455
3P, - 2 5.04643p, - 1 5. 0471
,PI - I 5. 0485
3p - 1 S. 04993p - 1 5.0511
3P, - 1 5. 0523
3P, - 1 5. 05353p, - 1 5. 054S
3pI - 1 5. 0555
3PI - 1 5. 0565
3P, - 1 5.0574
3pI - 1 5. 05823p, - 1 5.0590
3PI - 1 5.0598
3pI - 1 5. 0605
*, - 5 S. 06113PI - 1 5.0618
3pI - 1 5.0624
3p - 1 5.0630
3PI - 1 5.0636
3p, - 1 5. 0641
'p - 1 5.0646
3p - 1 5.06513
P, - 1 5.0655
3p - 1 5.06603P1 - 1 5.0664
3P, - 1 .5.0668
3p - 1 5. 0671
3pI - 1 5.0676
3pI - 1 5.0679
3P, - 1 5.0683
3P, - 1 5.0686
3p, - 1 5.0689
'Po - 1 4.30483P, - 1 4.3197
3P, - 2 5.1680
3P2 - 3 7.0013P0 - 1 4.4323
3P, - 2 7.1723P0 - 1 4. 4471
3P, - 1 4. 5328
3pZ - 2 7.632
3Po - 1 4. 5468
3p, - 3 7.834
3p - 0 5.623
3P, - 1 4.6115
3P2 - 3 7.992
3Po - 1 4.6254
-P2 - 2 8.173
'Po - 1 4.6687
3Po - 1 4.68773P, - 1 4.7034
3P2 - 2 8.624
3Po - 1 4.7373
3Po - 1 4.7438
3?2 - 3 8.840
'3P, - 1 4.7789
3P2 - 1 8.945
3P- 4.7843
3P2- 3 8.986
3P- 1 5.960
3P- 1 4.8139
-P2 2 9.174
3p- 4.8188
3Po - 1 4.8435
P,- 1 4.8478
SC
60
60
,Si
60
60
100i
60
60
I0O
90h
40
50
30
50
15 h
30
50
40
50
60
60
50IC
so
50
40
40SC
35
35
3535
35
35
3025
25
2020C
25
20
25
20
20
is
20
7 0h
20
18
18
18
17
16
16
16
1s
15
4
4
13
12
12
11
10
10
10
9
8
9
8
9
8
Brown et al. 611
1699.5
1699.107
1698.894
1698.66
1697.944
1697.755
1697.48
1697.2
1696. 961
1696.789
1696.44
1696.20
1696. 125
1695.965
1695. 408
1695.253
1695.01
1694. 795
1694.637
1694.275
1694. 100
1693.843
1693.629
1693. 471
1693.3
1693.215
1693.123
1692.846
1692.786
1692.6
1692.518
1692.472
1692.223
1692. 1 84
1691.956
1691.923
1691.716
1691.686
1691.498
1691.472
1691.4
1691. 300
1691. 277
1691. 119
1691.098
1690. 954
1690.934
1690. 802
1690.72
1690.664
1690.535
1690.418
1690.308
1690. 207
1690.113
1690.026
1689.945
1689.869
1689.800
1689.733
1689.671
1689.612
1689.558
1689.506
1689.457
1689.412
1689.369
1689.328
1689.290
1689. 253
1689.218
1689.185
1689.154
1689.125
58840
58854. 45
58861. 81
58869.9
58894.75
58901.32
58911
58922
58928.88
58934.85
58946.8
58955.2
58957.92
58963.48
58982.86
58988.23
58996.8
59004.17
59009.68
59022.28
59028.39
59037.34
59044.82
59050.33
59056
59059.26
59062.46
59072.11
59074.22
59082
59083.57
59083. 18
59093.88
59095.22
59103.18
59104.3S
59111.57
59112.63
59119.21
59120.11
59121
59126.13
59126.93
59132.46
59133.17
59138.22
59138.90
59143.52
59146.3
59148.36
59152.85
59156.98
59160.81
59164.36
59167.64
59170.68
59173.52
59176.18
59178.62
S9180.94
59183.13
59185.18
59187.09
59188.90
59190.60
59192.19
59193.69
59195.1459196.48
59197.77
59198.97
59200.13
59201.24
59202.25
-
CLASSIFICRTJONb9 J' n2
2 - 1 9.503
'o - 1 4.8685
Po - I 4.8724
2 - 2 9.617
vP - 1 4.88993P - 1 4.8934
, - 2 6. 171
3 - 3 9.836
P - 1 4.9081eo - 1 4.9113
2 - 1 9.944
P - 3 9.9826vP - 1 4.9239
P - 1 4.92693F0 - 1 4.9375
vo - 1 4.9404
2 - 2 10.1751Po - 1 4.9492
'o - 1 4.9523Po - I 4.9592
P - 1 4.9626
vP - I 4.9676
vP - I 4.9718
'Po - 1 4.9749
3p - 1 10.48
Po - 1 4.9799
3o - I 4.9817
vo - I 4.9872
' - I 4.9884- 2 10.612
3p - 1 4.9937
3o - I 4.9946O - 1 4.9995
3pa - 1 5.0003
o - I 5. 0049
3. - I 5.00553p0 - 1 5.00973o - 1 5.0102
P - 1 5.0140
3 - I 5.0145
3 - 3 10.83
3o - 1 5.0180
3po - 1 5.0185
'o - 1 5.0217
'o - 1 5.0221
'o - 1 5.02503Po - I S. 02S4
3P - 1 5.0281
3 - 3 10.9799
3 - 1 5.03093 - 1 5.0335
P - 1 5.03593P0 - 1 5.0381
-o - 1 5.0402
o - 1 5.04213o - 1 5.04383p - 1 5.0455
v, - 1 5.04713P0 - 1 5.0485
'PO - I 5.0499
'o - I 5.0511
O - 1 5.05233o - 1 5.05353p0 - 1 5. 0545
3o - I 5.0555vo - I 5.0565
3O - I 5. 0574
3 - 1 5.0582
o - 1 5.0590
o - 1 5.0598
3 - 1 5.0605
P - 1 5.0611
o - 1 5.06183o - 1 5.0624
- -
TABLE I. (Continued).
103 WAVELENGTH WAVENUA0EA CuASIFICArIOb(R) (.-I') 3 J. ri2
8
7
6
S
S
44
3
2
0
0
400
400'
lOc
45 h
18 0 c
40h
Soc
40h
18Sc
40h
35d
15d
30i
9od
j 0d
25C
15
25d
20
'Soc
120
14d
j0d14
70d
1689. 097
1689. 069
1689. 045
1689. 020
1658. 996
1688. 974
1688.953
1688. 932
1688. 914q
1688. 896
1688.87
1688.86
1688.84
1688.6
1687.6
1687.0
1686. 576
1683.8
1683.363
1682.74
1681.7
1681.2
1680. 821
1680.1
1679.0
1678. 776
1677.99
1677.7
1677.3
1677. 106
1676.46
1676.19
1675.90
1675.726
1675.19
1674.99
1674.71
1674. 570
1674. 12
1673.97
1673.71
1673. 593
1673.22
1673.09
1672.86
1672. 761
1672. 44
1672.32
1672.13
1672. 045
1671.77
1671.50
167 1. 4251671.18
1671. 10
1670.95
1670. 883
1670.67
1670.6
1670.47
1670. 4I11
1670.3
1670.23
1670. 046
1669.993
1669.83
1669.77
1669.67
1669. 622
1669.48
1669.4q2
lS69.3311669. 292
1669.22
59203.24
59204.21
59205.06
59205.93
59206.78
59207.54
59208.29
59209.01
59209.65
59210.29
59211. 1
59211.6
592 12.3
59222
59254
59276
59291.73
59390
S9404.90
59427
S9463
59482
59494. 73
59522
59558
59567.20
59595. 1
59605
59619
59626.52
59649.6
59659.0
59669.4q
59675. 64
59694. 7
59701.7
59711.7
59716.83
59732.7
59738.3
59747. 4
59751.67
59765. 1
59769.8
59777.9
59781.39
59792.9
59797
59803.8
59807.01
59816.9
59826.6
59829. 1959837.8
59M4. 9
59846.3
59848.58
59856.4q
59858
59863.3
59865.51
59868
59872.0
59878.61
59880.49
59886.3
59888.4q
59892.2
59893.78
59899.0
59900.9
5990q.2S59905.63
59908.3
3p, -
3po -
3p,3 -
3,,2 -3
3P23 -32
3P2 - 3
'PO3 - 3
3P~2 -233P, -31
I - 2
3P23 - 3
3jp3 -I2
3I'2 - 3
3P23 -23
3P23 -3
~I'3 -I3
3P2 -23
3P2 - 3
3P2 - 3
3P2 -I
3P2, -30
3P'2 - 3
I'P2 -I3
32-2
-P 3
3P 3'P 2
P3 WAVELrNom WRVDAMef CUvSSI~u'croeP(A) Eur,) 3 J.) n '
5. 0630
5. 0636
5. 064 1
5. 0646
5. 0651
5. 0655
5. 0660
5. 0664
5.0668
5.0671
5.0676
5.0679
5.0683
11.*46
6.57S
11.*85
11. 9786
12.83
12. 9766
S. 20 1
13. 601
13.82
13. 9753
6.953
14.84
14. 975
15.42
15.60
15.84
15. 97416.41I
7. 172
16.84q
16. 972
17.41
17. 590
17.84q
17. 972
18B.4 1
18.59
18.84
18.97219.40D
19.58
19.64q
19. 970
20.40
20.58
20.84
20. 969
21.40
21. 855
21. 96922.4q0
22.57
22.85
22.969
23. L 1
7.532
23. 833
23. 967
7.556
24.39
24. 836
24. 966
25.40O
25. 573
25.85
25. 963
26.40O
26. 574
26.84626. 9657.632
9
13
4d
8
12
Ld
3d
3 f
10
3d
10
3d
9
Of.
8
2d
a
2d
7
id
7
6id
6
6
S
S
S
0
5
0
4
0
4
0
4
0
4
3
3
3
2
2
2
0
40'd
40i
20d
40'
60d
40'
1669.16
1669.03
1668.9S97
1668.88
1668.84
1668.77
1668. 733
1668. 63
1668.5S2
1668. 494
1668.40
1668.30
1668. 277
1668.19
1668.10
1668. 082
1668.00
1667.93
1667. 905
1667.83
1667.76
1667. 741
1667.68
1667. 593
1667. S3
1667.456
1667.40
1667. 330
1667.28
1667. 2141
1667.17
1667. 106
1667.06
1667. 008
1666.96
1666. 915
1666.88
1666. 831
1666.791666. 749
1666. 72
1666. 676
1666.64
1666. 607
1666.58
1666. S40
1666. S2
1666. 480.
1666. 46
1666. 423
1666. 368
1666. 316
1666.27
1666.22
1666. 18
1666. 14
1666. 10
1666.04
1666.01
1665.12
1662.53
1659.12
1658.9
1657.91
1655.8
1655.06
1653.22
165 1.02
1650.81650.00
1649.35
1647.92
1646.5S8
1645. 088
59910.2
59914.9
59916. 24
59920.4
59922.0
59924.5
59925.72
59929.5
59933.3
59934.29
59937.6
59941.3
59942.09
59945. 2
59948.5
59949. 08
59952.0
59954.7
59955.441
59958.0
59960.5
59961.36
59963.7
59966.68
59969.0
59971.61
59973. 7
59976.15
59978. 1
59980.30
59982.0
5998q.1I8
59985.9
59987.70
59989.3
59991.06
59992.3
59994.08
59995.4q59997.05
59998.0
59999.67
60000.8
60002.15
60003
60004.54
60005.4
60006.73
60007.6
60008.77
60010.74
60012.61
60014.3
60016.0
60017.4q
60018.9
60020.3
60022.7
60023.8
60055. 6
60149.3
60272.8
60281
60316.9
60395
60420. 8
60488.2
60568.7
60576
60606. 1
60630
60682. 6
60732.0
60787.02
3P23
3P'2
3P23
3P23
3P2
3P,'
3p,'
3)P3
3'P2
3P,
3P23
3P2
3','
3P,'
3P2
3p,'
3P,'
3P,'
3p,
3p,
3P,'
3p,3
3P,,
3,,,-3p,
3p,,
3p,,
3P,,
3p,,
3p,'
3p,'
3P,'
3p,,
I1a WJAVELENGT WAVENMU CLASJFncRwJ0N(A) )c..I) 3 J I n ~,
-1
-3
-3
-1
-2
-3
-3
-1
-3
-3
-1
-3
-3
-1
-3
-3
-1
-3
-3
-1
-3
-3
-1
-3
-1
-3
-1
-3
-1
-3
-1
-3
-1
3
-1
-3
-1
-3
-1-3
-1
-3
-1
-3
-1
-3
-1
-3
-1
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-1
-2
-0
-i
-2
-1
-1
-2-o-1-2
-1
- I
-2
-o
27.39
27.84
27. 96628.40o
28.57
28.83
28. 96329.40o
29.85
29.964
30.4
30.9
30.96
31.4
31.9
31.96
32.4
32.8
32.95
33.4q
33.8
33.96
34.4q
34. 95
35.4
35.94
36.4
36.94
37. 4
37.914
38.4
38.95
39.439.94q
410.4q
40. 95
41 .44 1.93
42.442.95
43.3
413.95
44.4q
44.94q
45.345.94q
46.3
416.94q
417.4
47. 93
48.95
49. 95
50.92
51.99
53.0
Sq. 0
55.0
57.0
57.9
7.949g
8.173
8. 498
8.527
8. 624t
5.960
8.945
9.174
9.470
9.5039.617
6.201
9.94410.175
10. 447
220
8
18
35
25i
Sooc
20'
30d
30d
20'
45d
20d
30'
30
1o~
'Si
25d
30'
25
1io30d
20d
3iS
10128d
20d
'Si
10i
26d
20'
25
30
25
181
8ii28
22
15i
6
5
26
22
108Si
1644.95
1644.25
1642.69
164 1.67
1640. 626
1640. 50
1640. 2
1639.94
1638.73
1637. 96
1637. 184
1637.09
1636. 617
1635. 67
1635.06
1634. 477
1634. 40
1 634.0 1
1633. 61
1633. 250
1632.77
1632. 313
1632. 25
1631. 92
1631. 305
1630. 91
1630.55
1630.50
1630.22
1629. 713
1629. 59
1629.39
1629. 104
1629. 061
1628. 828
1628. 401
1628.13
1627. 898
1627. 861
1627.664
1627. 305
1627.08
1626. 880
1626.85
1626. 69
1626. 37
1626.187
1626.02
1625. 995
1625. 85
1625. 584
1625.42
1625. 280
1625.26
1625. 133
1624. 903
1624.76
1624. 641
1624.63
1624. 51
1624. 316
1624.30
1624. 19
1624. 09
1624.08
1623.98
1623. 803
1623.70
1623.601
1623.59
1623.51
1623.361623. 271623.18
60792. 2
60818. 0
60875. 9
60913.4
60952.34
60957
60968
60977. 9
61022.9
61051. 7
61080. 48
61084.0
61101. 65
61137. 1
61160. 0
61181. 64
618184.5
61199. 2
61214
61227.63
61245. 8
61262.76
61265.2
61277.4q
61300.60
61315.6
61328.9
61330.9
61341. 3
61360.50
61365
61372.6
61383.42
61385.05
61393. 84
61409.93
61420. 1
61428.90
6130.32
61437.72
61451.3061459. 9
61467.35
61468.5
61474.7
61486. 5
61493.54
61500.0
61500.82
61506.2
61516.34
61522.4
61527.86
61528.6
61533.43
61542.14
61547.5S
61552.05
61552.6
61556.9
61564.39
61565
61569.0
61573.0
61573.4
61577.0
61583.81
61587.6
61591.48
61592.0
61594.8
61600.761604.2
61607.6
612 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Bone l 1
3,,, - 2
3E- 2
1 - 1
-P 2
-P 2
3 - 2
3 - 23p,, - I
-P 2
-P 2
-p 1
-P~23fp) - 0
3P~) - 13E- 2
3,') - 2
3,- 0
-P 2
-P 2
-P 0
3,,) -2
IE- 2
'O- I
3,- 23,- 0
3,', - 2
3,- 2
31P) - I
3P', - 23,- 1
1 - 2
3,- 2i3p,) - 1'I', - 2
3 - 2
3p, - 0
-P 23p~, -
3,- 2
3,- 2i
IE- 13p', - 2
3P', - 2
3,,, -I
3,- 2
3,', - 2
-P 0
1 0.48i
10. 612
10. 942
11. 173
11. 42951 1.4q6
6.604
11. 607
II. 942
12. 172
1 2. 4 156
12.4q5
12. 6044
12. 941
13. 173
13. 40415
13. 44
13. 601
6. 953
13. 9394
14. 17
14q. 395
14. 43
14q.60
14. 939
15. 17
15. 387
15.42
15.60
15. 939
7. 196
16. 17
16. 381
16.4q1
16. 594
16. 938
17. 17
17. 376
17. 41
17. 590
17. 937
18. 17
18. 375
18. 41
18. 59
18. 938
19. 16
19. 373
19.410
19. 58
19. 938
20.16
20. 368
20.40
20.58
20. 939
21. 17
21. 369
21. 40
21. 59
21. 938
7.556
22.16
22. 366
22.40O
22.57
22. 938
23. 15
23. 372
23. 41
23.57
23. 93424. 15
24. 37
Brown et aL 612
TABLE I. (Continued).
la WRVELENGTH WRVEDJ#BER CLRSSIFICRTIONb
(R (CM-i) 9 J nI
4
l0
15
8
2
1-1
14
11
11 21
0
0
12
0
0
0
10
0
0
0
9
0
0
8a
0
0a
0
7
06
0
6
0
50
5
0
4
0
4
0q
0
3
0
3
0
2
0
0
0
100
120'
40t
I801
30'
751
90'
25'
701
80'
1623. 096
1622.96
1622.88
1622. 801
1622.79
1622. 729
1622.61
1622.54
1622. 466
1622. 403
1622.294
1622.24
1622.170
1822. 113
1622.017
1621.96
1621. 902
1621.85
1621.76
1621.71
1621. 663
1621.62
1621.54
162 1. 49
1621. 446
1621.410
1621.33
1621.30
1621. 249
1621.21
1621. 16
1621.070
1621.03
1620.98
1620.909
1620.83
1620. 761
1620.69
1620. 624
1620.56
1620. 4981620.44
1620. 385
1620.33
1620. 277
1620.22
1620.178
1620.13
1620. 089
1620.04q
1620.005
1619.96
1619. 925
1619.89
1619.85
1619.82
1619.78
1619.75
1619.72
1619.69
1619.66
1619.50
1616.76
1613.48
1609.97
1608.08
1605.89
1603.22
1601.85
1600.36
1598.27
1597.29
1596.15
1594.53
61610.67
61615.9
61618.9
61621.86
61622.3
61624.58
61629.2
61631.6
61634.58
61636.98
61641.1061643.1
61645.84
61647.97
61651.63
61653.7
61655.99
61657.9
61661.3
61663.3
61665.11
61666.9
61669.8
61671.8
61673.36
61675.0
61677.8
61678.8
61680.85
61682.2
61684.4
61687.63
61689.0
61690.9
61693.77
61696.7
61699.43
61702.2
61704.64
61707.2
61709.4161711.6
61713.74
61715.9
61717.84
61719.9
61721.61
61723.4
61725.02
61726.8
61728.21
61729.8
61731.25
61732.7
61734.0
61735.4
61736.6
61737.9
61739.1
61740.3
61741.4
61747.3
61852
61977.9
62112.8
62186
62270.9
62374.3
62428
62486
62567.6
62605.9
62650.6
62714.6
3p1 -
3P, -
3P -3P1 -
3P -
3P1 -
3P1 -
3P1 -
3PI -
3P -
3P1
-
'PI -
3IF -
3P, -
3P, -
3I, -
3I, -
3P, -
3P, -
3P, -
3P, -
3F,-
3P,-
3P,-
3P,-
3P,-3
P,-
3P -
3PI-
3PI,
3PI,
3PI,
3P,
3P,
3P,
3P,
3P,
3P,
3P,
3P,
3P,
3PI
3P,
3P,
-p,
3p,
3F,
IF,3F,3p,
IF,3p0
3p0
IF0IF03F0
3p03p03p0IF0
3p0
-p2
-p2
3P,
2P
2P
0P
2p
2P
3P
2P
2P
0P
2P
2P
0P
2P
2P
3P
2P
2P
2P
-1O
-2O
3P0
-2O
- 2
-1s
-02
-12
- 0
- 1
-0T
-1T
-0-
I-1
-0O
24.575
24. 936
25.15
25.369
25.40
25. 573
25. 937
26.12
26.371
26.574
26.93527.11
27.366
27. 567
27.929
28.13
28.366
28.56
28.937
29.16
29.365
29.57
29. 933
30.17
30.37
30.6
30.94
31.1
31.37
31.6
31.94
32.37
32.6
32.93
33.36
33.93
34.36
34.94
35.37
35.92
36.3736.93
37.36
37.94
38.37
38.9
39.38
39.9140.36
40.9
41.36
41.9
42.37
42.9
43.4
43.9
44.4144.9
45.4
45.9
46.4
7.949
8.200
8.527
1 8.945
1 9.194
1 9.503
1 9.944
10.193
1 0.48
10.942
I11. 178
111.46
11.942
I" WRVELENGTH WRVJENUH8E CLASSIFICRTIONb(RI (CM-,1 9 J ' n 2
20i 1593.75 62745 3P 0 - 1 12.18
7 0 h 1592.93 62777.4 3PO - 1 12.45
7 5 d 1591.63 62828.8 3P, - 1 12.941
18i 1591.01 62853 3P0 - 1 13.19
65i 1590.39 62877.6 'PO - I 13.44
7 0 d 1589.33 62919.4 'P 0 - I 13.9394
15' 1588.85 62938.6 3P 0 - 1 14.18
60h 1588.36 62957.9 3PO - I 14.43
6 5 d 1587.492 62992.43 1pi - I 14.939
12i 1587.10 63008.2' 3Pi - 1 15.18
5 5 h 1586.71 63023.5 3P 0 - I 15.42
60 1585.987 63052.20 Po - 1 15.939
101 1585.67 63064.8 3P' - 1 16.18
5 0 h 1585.35 63077.7 3P0 - 1 16.41
55 1584.744 63101.67 3Pl - I 16.938
8i 1584.48 63112.3 3Po - 1 17.18
45 h 1584.22 63122.7 3PO - 1 17.41
50 1583.705 63143.08 3P0 - 1 17.937
7' 1583.48 63151.9 3P0 - 1 18.17
40h 1583.260 63160.82 3P0 - I 18.41
45 1582.825 63178.18 3PI - 1 18.938
6' 1582.65 63185.2 3P0 - 1 19.16
4 0h 1582.449 63193.21 3po - I 19.40
40 1582.076 63208.10 3PI - 1 19.938
5' 1581.92 63214.4 'PI - 1 20.17
40h 1581.76 63220.9 3PI - I 20.40
35 1581.431 63233.86 3P0 - 1 20.939
5' 1581.30 63239.1 3P 0 - 1 21.160
40h 1581.16 63244.9 3po - 1 21.40
35 1580.874 63256.17 3P1 - 1 21.938
4' 1580.77 63260.5 3P - 1 22.15
35i 1580.63 63265.8 3Pi - 1 22.40
30 1580.388 63275.61 'Po - 1 22.938
3' 1580.29 63279.6 3P, - 1 23.16
30h 1580.18 63284.0 3P0 - 1 23.41
25 1579.963 63292.62 3P 0 - 1 23.934
2' 1579.88 63295.9 3PO - 1 24.14
2 5 h 1579.777 63300.09 3P1 - 1 24.39
25 1579.587 63307.70 3P0 - 1 24. 936
2i 1579.52 63310.5 3P0 - 1 25.14
2 5 h 1579.42 63314.3 3P1 - 1 25.40
20 1579.253 63321.06 'P0 - 1 25.937
1i 1579.19 63323.6 3P0 - 1 26.14
2 0 h 1579.11 63327.0 P - I 26.40
20 1578.957 63332.93 3P0 - 1 26. 935
(i 1578.91 63334.9 3P, - 1 27.11
2 0 h 1578.83 63338.2 3P0 - 1 27.39
18 1578.692 63343.57 3P1 - 1 27.929
Oi 1578.64 63345.5 3P0 - 1 28.13
18h 1578.574 63348.32 3PF - I 28.40
17 1578.454 63353.13 Po - 1 28.937
0i 1578.41 63355.0 'PF - 1 29.15
Ish 1578.35 63357.4 3Pj - 1 29.40
16 1578.240 63361.71 'Po - 1 29.933
17h 1578.14 63365.7 3P, - 1 30.4
15 1578.046 63369.50 3P, - 1 30.94
15 1578.046 63369.50 3P, - 1 30.94
1 7 h 1577.96 63373.0 'P0 - 1 31.4
14 1577.870 63376.60 3Po - 1 31.94
1 6 h 1577.79 63379.9 3Po -1 32.4
13 1577.710 63383.01 3P0 - 1 32.93
1 5h 1577.64 63386.0 3P1 - 1 33.4
12 1577.564 63388.86 3PO - 1 33.993
14 1577.49 63391.7 3Po - 1 34. 4
11 1577.429 63394.28 3P0 - 1 34.94
1 3 h 1577.37 63396.8 3Po - I 35.4
10 1577.308 63399.15 3P - 1 35.92
1 2 h 1577.25 63401.6 3P0 - I 36.4
10 1577.194 63403.74 3PI - 1 36.93
1lh 1577.14 63406.0 3Po - 1 37.4
10 1577.090 63407.94 3Po - I 37.94
10h 1577.04 63410 'Po - 1 38.4
9 1576.99 63411.8 3P0 - 1 38.9
10h 1576.95 63413.7 3P0 - 1 39.4
I" WAVELENGTH WARVEMBEA CLSWIFICRTIONb(R (CH-,1 9 Jo n2
9 1576.90 63415.4 q 'o - 1 39.9
9 1576.86 63417.2 3Po - 1 40.4
8 1576.82 63418.6 3Po - 1 40.9
9 1576.779 63420.42 Po -I 91. 4
8 1576.75 63421.7 3Po - I 41.9
8 1576.71 63423.4 Po - I 42.4
7 1576.68 63424.6 Po - I 42. 9
7 1576.64 63426.1 'Po - 1 43.3
7 1576.61 63427.2 3Po - 1 43.9
7 1576.57 63428.7 -o - I 44. 4
6 1576.55 63429.7 'Po - I 44.9
6 1576.51 63431.2 tPo - I 45.3
5 1576.49 63432.1 'o - 1 45.95 1576.45 63433.5 Po - 1 46.3
5 1576.43 63434.3 3Po - 1 46.9
4 1576.40 63435. 6 Po - 1 47.4
4 1576.39 63436.2 Po - 1 47.8
4 1576.35 63437.5 Po - 1 48.5
4 1576.33 63438.3 tPo - I 48.9
3 1576.30 63439.5 Po - 1 49.6
3 1576.29 63440.1 'PO - 1 49.9
2 1576.26 63441.2 'Po - 1 50.5
2 1576.25 63441.7 'Po - 1 50.8
2 1576.22 63442.9 'o - 1 51.6
1 1576.21 63443.3 tPo - 1 51.8
1 1576.18 63444.4 3o - 1 52.5
1 1576.17 63444.9 Po - 1 52.9
1 1576.15 63445. 9 Po - 1 53.5
Of 1576.14 63446.3 3o - 1 53,8
is 1576.11 63447.4 Po - I 54.6
09 1576.07 63448.8 Po - 1 55.7
09 1576.04 63450.0 'Po - 1 56.7
aRelative intensities are basedon visual estimates fromphotographic emulsions andare intended only as a qualita-tive guide for the reader.
bThe breakdown of conventionalnotations is serious enoughin the case of Sni to forcetheir abandonment (see text).The lower level (from 5p2),the J' value of the upperlevel, and the effective quan-tum number of the upper
level (based on the S,,/2ionization limit) appear inthe last three columns.
'Very diffuse line.
dDiffuse, symmetrical line.'Diffuse shoulder.6Shoulder measurement.gBlended line. If more thanone transition is indicated,the first entry in the tablewas judged to be the major
contributor to the line.hDiffuse, unsymmetrical line.An emissionlike feature ap-pears to the red of themeasured position.
'Diffuse, unsymmetrical line.
An emissionlike feature ap-pears to the violet of themeasured position.
"Unassigned line.
Brown et al. 613613 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
-
3PO80
TABLE II. Observed odd-energy levels of Sn I. a
LEvEL J
34640.76 0
34914.28 1
38628.88 2
39257.05 1
39625.51 2
43682.74 2
44144.37 2
44508.68 144576.00 3
47145.68 2
47487.70 3
48107.27 4
48216.36 0
48222.16 1
48669.41 2
48981.93 149487.13 0
49823.82 3
50125.97 1
51010.94 2
51160.52 2
51474.711 1
51754.67 3
52415.83 2
52706.80 1
52919.77 0
53020.97 1
53592.77 1
53631.83 2
53826.55 3
54211.76 2
54653.86 3
54713.32 2
54830.19 3
55073.21 1
55131.53 0
55156.74 1
55296.28 2
55444.61 4
55621.89 0
55688.37 1
55741.17 3
55805.35 2
55854.62 2
56175.54 3
56242.35 1
56297.98 3
56358.87 0
56390.11 1
56546.14 2
56659. 18 1
56779.98 2
56838.68 3
57094.33 1
57103.95 0
57104.73 2
57106.96 1
57150.16 2
57181.71 3
57283.66 1
57374.56 2
57513.02 3
57517.71 3
57533.30 2
57562.44 1
57592.56 0
57603.16 1
57775. 44 2
57847.17 3
57856.75 2
57874.90 3
57898.20 1
nI
2.1124
2. 1243
2. 3078
2.3438
2. 3657
2.6565
2.6968
2.7300
2.7363
3.0131
3.0567
3. 1406
3.1561
3.1570
3.2231
3.2719
3.3556
3.4279
3.4713
3.6534
3.6871
3.7610
3.8307
4.0122
4. 1007
4.1693
4. 2031
4. 4110
4.4264
4.5054
4. 6750
4.8955
4.9276
4. 9926
5. 1364
5.1728
5.1888
5.2799
5.3823
5.5128
5.5643
5.6062
5.6585
5.6996
5.9913
6.0578
6.1150
6.1794
6.2133
6.3912
6.5300
6.6889
6. 7704
7. 1637
7.1799
7. 1812
7. 1850
7.2591
7.3147
7.5036
7.6849
7.9883
7.9992
8.0359
8.1056
8.1797
8.2063
8.6778
8.8996
8.9306
8. 9901
9.0682
RELRTIVELo<c
0,, P.
n'2
1.9505
1 .9598
2.1012
2.1283
2.1446
2.3541
2.3820
2.4048
2.4091
2.5916
2.6192
2.6714
2.6809
2.6815
2.7216
2.7508
2.8000
2.8416
2.8662
2.9661
2.9841
3.0225
3.0587
3.1487
3.1909
3.2229
3.2385
3. 3308
3.3374
3. 3709
3.4402
3.5252
3.5372
3.5610
3.6120
3.6246
3.6301
3.6609
3.6945
3.7360
3.7518
3.7646
3.7803
3.7925
3.8749
3.8927
3.9077
3.9244
3.9330
3.9770
4.0098
4. 0458
4.0636
4.1441
4.11472
4.1475
4. 1482
4.1623
4.1727
4. 2069
4.2381
4.2869
4.2886
4.2942
4.3048
4. 3158
4.3197
4.3844
4.,4122
4. 4159
4.4231
4. 4323
b
b
b
b
b
b
b
b
bb
bbbbbbb
bbb
bbbbbb35
3
15
S
12
80
15
100
6
12
b 5
b 50
b 30
b
40
80
90
20
12
10
350
- 40
- 200
- 100
- 15
- 150
- 50
- 100
- 70
- 200
- 500
- 30
- 5
- 300
- 450
- 250
- 10
so
4
300
80
30
2
57930.23 0 9.1790 4.4450
LnEvL BRILL RE3-P, 3p,
b 10
b b 20
b 30
b b 40
b 5o 5s
b 60
b 70
b b 8090
b 10°
11°
120
b 130
b b 140
b 150
b 30 160
b 170 5s
180
b 75 190 5s
1 0 200 5s
3 210
1 5 75 220
230
100 240
60 300 250
75 260
25 6009 270
100 1000 280 5s
500 290 5s
300 5s
15 310
320
9 33°
340
250 1200 350
220 360
70 800 370
400 385
390
125 400
350 125 41°
420
300 430
15 440
200 300
120
100
1000
300
50
250
1OOf
500
ISO
120
450
460
470
480
490
510
520
53o
54o
1000 550
50 60 W.
150 56°
570
35 120 580
25 590
300
200
100
25
35
300
200
50
150
120
58
600
610
620Wo
630
640
65°140
TABLE II. (Co
ENEfGmLEvEL J n,
(CM-1
57935.30 1 9.19
58057.94 2 9.66
6s 3P0 55100.69 2 9.84
3 5 0 58100.89 3 9.845P S2 58133.05 3 9.98
58143.31 1 10.03
58173.13 0 10.17
58176.00 1 10.15
58260.64 2 10.62
58287.20 2 10.77
3 58292.33 3 10.805d F, 58324.00 1 10.98
58324.01 3 10.98
58352.89 0 11.16
58354.92 1 11.18
33 0 58390.58 2 11.41
;5P Po 58435.01 2 11.72
3 3 o 58438.55 3 11.7'
3 3P1 58449.60 1 11.83
5P P2 58456.21 2 11.88
58465.59 0 11.9E
58469.26 3 11.9E
3 58490.37 1 12.15
75 32 58521.91 4 12.42
58500.42 0 12.24
58523.55 1 12.43
3 3 58548.45 2 12.6E
3P D1
58552.03 3 12.65
5p3 3 D20 58553.55 2 12.71
i5p D3 58594.44 1 13.11
58602.44 0 13.1'
58607.88 1 13.25
58636.00 2 13.56
5g J 30 58641.27 3 13.62
58648.41 2 13.7C
58671.90 3 13.98
58679.11 1 14.O0
58687.73 0 14.19
58690.06 1 14.22
58709.34 2 14.48
58712.49 3 14.52
58724.88 2 14.70
58744.24 3 14.95
58748.85 1 15.066
g J=3' 58757.00 0 15.18
58758.38 1 15.21
58770.69 3 15.41
58770.78 2 15.41
58787.34 2 15.69
58803.36 3 15.98
58806.48 1 16.04
58813.89 0 16.18
58814.81 1 16.20
- 58819.74 3 16.30.
58822.59 2 16.35
8s 3p 2 ° 58838.97 2 16.69
58852.53 3 16.99
58854.45 1 17.03'
33 58861.15 0 17.18
s5
p S° 58861.78 1 17.20
58862.17 3 17.21i
8g J=3° 58866.63 2 17.31!
58882.18 2 17.69!
58893.53 3 17.98i
58894.75 1 18.02
58899.21 3 18.14
58901.19 0 18.19
58901.32 1 18.291
58904.20 2 18.271
58918.65 2 18.69'
9g J=30 58928.87 1 19.001
58931.49 3 19.081
58934.82 1 19.191
'ntinued) .RAnrAv Srornor
n2 LowoE LEvEL BRILL REHMWS1°2
3P2 31P, 3P
170
651
59
468
898
67
69
08
252
34
27
94
94
84
13
56
92
553
379
882
607
'94
587
253
418
399
642
175
17
26
'55
528615
218
048
389
0
9
0
9
2
4
8
8
6
8
5
2
B
5
0
3
0 40 - 100 66°
15 20
- 240
180
20
1 100 150
4. 4471
4.4970
4. 5149
4.5149
4. 5285
4.5328
4. 5455
4.55468
4.5835
4.5952
4. 5974
4.6115
4.6115
4.6245
4.6254
4.6416
4. 6619
4.6636
4.6687
4.6718
4.6761
4.6778
4. 6877
4.7026
4. 6924
4.7034
4.7152
4. 7169
4.7176
4. 7373
4.7412
4. 7438
4.7576
4.7602
4. 7637
4.7753
4. 7789
4.7832
4. 7843
4. 7940
4.7956
4.8018
4. 8116
4.8139
4.8181
4. 8188
4.8251
4. 8251
4. 8336
4. 8419
4. 8435
4.8473
4. 8478
4. 8504
4. 8519
4. 8604
4. 8675
4. 8685
4.8721
4. 8724
4.8726
4. 8750
4. 8832
4.8892
4. 8899
4.8922
4.8933
4.8934
4. 8949
4.9026
4. 9081
4. 9096
4.9113
5
45
4
80
5
50
20
30
75
670
680
W°
lOg J- 3
90
85 100 690
40
40
85
15
40
90
40
11g J 30
80
60
12g J=30
80 80
- 35
- 25
- 20
- 90
- 25
- 30
- 25
- 25
- 30
0 35
- 15
- 30
- 25
0 35
- 25
- I
- 25
- 5
0 40
- 55
- 4
- 3
- 15
- 20
- 45
3 60
- 4
- 3
- 4
- 22
4 1009
- 4
- 3
- 2
- 18
4 80
- 40
- 2
4 900 45
- 3
- -
4 80
35
50
35
45
so
40
25
35
80
60
700
710
90
70 720
80 730
14g J 30
60 740
60 750
15g J 30
60 760
60 77o
16g J-30
45
30
35
100
20
35
20f
45
120
30
40
S
709120
30
35
70
70 W0
17g J=30
60
60 W0
18g J-3'
60
60
60
60 60
Wo
WO
4
614 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Brown et al. 614
65
90
80
40
90
60
70
120
. .- -
I
I
I
TABLE II. (Continued), TABLE II. (Continued).
ENERGY
LEVEL(C. 1
58936.50
58949.73
58957.94
58959.67
58963.49
58964.38
58976.41
58982.85
58984.24
58988.23
58988.63
58999.46
59004. 17
59005.79
59009.72
59009.78
59019.53
59022.23
59024.66
59028.37
59028.37
59037.33
5904 1. 34
59044. 71
59044.78
59050.30
59052.63
59056.11
59059.23
59059.25
59062.46
59066.39
59069.24
59072.12
59072.13
59074.20
59078.64
59080.90
59083.60
59083.67
59085.20
59089.54
59091.44
59093.92
59094.01
59095.19
59099.30
59100.95
59103.22
59103.30
59104.32
59105.62
59108.17
59109.49
59111.63
59111.72
59112.58
59116.11
59117.14
59119.26
59119.34
59120.12
59123.38
59124.20
59126.18
59126.25
59126.97
59130.06
59130.56
59132.50
59132.63
59133.22
59136.01
J BRILL REI1
5P ..n',
19.249
19. 694
19. 986
20.049
20.191
20. 224
20.694
20.959
21.017
21.188
21.205
21.692
21. 915
21. 993
22.186
22. 189
22. 690
22. 836
22.969
23.176
23.176
23. 702
23. 94924. 163
24i. 167
24. 530
24.688
24.93025.154
25.155
25. 391
25.690
25. 913
26.144
26.145
26.315
26.692
26.890
27. 132
27. 138
27. 279
27. 689
27.875
28. 123
28.132
28.252
28.684
28. 864
29.116
29.125
29.240
29.389
29.689
29.847
30.110
30.121
30.23
30.68
30.82
31.11
31.12
31.23
31.69
31.8132.10
32.11
32.22
32.70
32.78
33.10
33.12
33.21
33.69
n2
4.9123
4.9194
4. 9239
4. 92484. 9269
4.9274
4. 9340
4. 9375
4. 9382
4. 9404
4. 9407
4. 9466
492470
4. 9501
4. 9523
4. 9523
4. 9577
4. 9592
4. 9606
4. 9626
4. 9626
4. 9676
4.9699
4. 97 18
4. 97 18
4.9749
4. 9762
4. 9782
4.9799
4.9799
4. 9817
4. 9839
4. 9856
4.9872
4. 9872
4. 9884
4. 9909
4. 9922
4. 9937
4. 9937
4. 9946
4.9971
4. 9981
4. 9995
4. 9996
5.0003
5.0026
5.0036
5. 0049
5.0049
5. 0055
5. 0062
5.0077
5. 0084
5.0097
5. 0097
5.0102
5. 0122
5. 0128
5. 0140
5. 0141
5. 0145
5.0164
5.01695. 0180
5.0181
5. 0185
5.0203
5. 0205
5. 0217
5.0217
5. 0221
5. 0237
ID
0
4
4
0
3
0
0
3
0
0
3
C
3
C
RELATIVE STRENGTHLOwEn LEVEL
3* , 3P1
40 100
3 30
4 30
75
2f 60 S
40 90
5 30f
10 5
70
40 150
3 25
20 30
60
- 150
40 -
- 25
25 40
40- 120
30 -
40 100 E
35
35 -
- 100
40 80
25
35 -
- 80
35 70
1 8
3 7
- 75
35 -
30 65
1 5
- 70
- 35 -
25 60
- 0 5
8
- 65
30 -
20 55
0 5
is
- - 60
30 -
20 50
0 4
3 20
- 50
- 25 -
15 40- - 4
3 30
- 45
- 20 -
15 35
- 3
3 30- 40
- 15 -
5f 25
- 3
2 30
- 35
- 15 -
5 25
- 2
35
25
25
20
25
20
25
20
10
10
ni n2
50 W°
ID
30
S TRENGTHLEVEL BRILL REHms3
p, 3p,
ENERGY
WS L EVEL J
59136.44 3
59138.28 1
59138.35 2
59138.89 1
59141.53 2
59141.77 3
59143.58 1
59143.69 2
59144.25 1
59146.56 2
59146.66 3
59148.43 1
59148.57 2
59151.19 3
59151.19 2
59152.90 1
59152.97 2
59155.38 3
59155.47 2
59157.01 1
59157.11 2
59159.25 3
59159.39 2
59160.84 1
59160.92 2
59162.80 3
59162.95 2
59164.39 1
59164.41 2
59166.14 3
59166.33 2
59167.67 2
59167.67 1
59169.22 3
59169.5 2
59170.69 1
59170.70 2
59172.06 3
59172.5 2
59173.54 1
59173.55 2
59174.80 3
59175.1 2
59176.18 2
59176.19 1
59177.31 3
59178.62 2
59178.64 1
59179.64 3
59180.98 1
59181.0 2
5g F 0? 59181.87 3
59183.14 1
59183.2 2
59183.99 3
59185.19 1
59185.91 3
59187. 10 1
59187.74 3
59188.91 1
59189.49 3
59190.59 1
59191.13 3
59192.20 1
59192.64 3
59193.70 1
59194.14 3
59195.14 1
59195.53 3
59196.47 1
59196.81 3
59197.77 1
59198.14 3
n '
33.77
34. 10
34.11
34.21
34.70
34.75
35.10
35. 12
35.23
35.70
35.72
36.09
36.12
36.70
36.70
37.08
37.11
37.68
37.70
37.70
38.11
38.66
38.70
39.09
39.11
39.63
39.6740.09
40.10
40.61
40.6741.09
41.09
41.59
41.7
42.08
42.08
42.55
42.7
43.08
43.08
43.55
43.7
44.07
44. 08
44.52
45.06
45.07
45.49
46.08
46. 1
46.47
47.07
47. 1
47.48
48.0848. 44
49.07
49.42
50.08
50.41
51.07
51.40
52.07
52.36
53.07
53.37
54.07
S54.36
55.06
55.32
56.07
56.37
n'2
5. 0239
5.0250
5.0250
5. 0254
5.0269
5.0270
5.0281
S. 0281
5.0285
5.0298
5.0299
5.0309
5.0310
5.0325
5.0325
5.0335
5. 0335
5.0349
5.0350
5.0350
5.0359
5.0372
5.0372
5. 0381
5.0381
5. 0392
5.0393
5.0402
5. 0402
5.0412
5. 0413
5.0421
5. 0421
5.0430
5.0431
5.0438
5.0438
5.0446
5. 0449
5.0455
5. 0455
5.0462
5.0464
5. 047 1
5. 0471
5.0477
5.0485
5.0485
5. 0491
5.0499
5.0499
5.0504
5.0511
5.0512
5.0516
5.0523
5.0528
5.0535
5.0538
5.0545
5.0549
5.0555
5. 0558
5.0565
5.0567
5.0574
5.0576
5.0582
5.0584
5. 0590
5.0592
5.0598
5. 0600
Brown et al. 615615 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
I0j
RELATJVELOwER
2 30
- 10
2 25
- 10
2 25
- 10
2 20
- 10
2 20
- 10
2 18
- 7
2 15- 8
2 13
4
2 12
- 3
2 11
22 10
- 2
2 9
- 1
2 8
- 0
2 7
- Of
2 6
1 5
1 41
1 4
1 3
1 3
1 3
0 3
0 2
0 2
14
11 13
11 12
11 12
10 11
10 10
9 10
9 10
9 9
8 8
35
20
2
20
15
1
20
17
18
I
0
16
0
15
Of
15
0
14
0
13
13
12
12
50
50
60
60
50
50
50
40
40
35
35
35
35
W°
W°
Wo
- - - -.
, c
20
15
20
20
18
18
18
17
16
16
16
15
15
TABLE II. (Continued).
FsERGi litulJVt :51-1,
LEvEL J n I n ,, LoHE LEVEL 8lLL REMARKS(aUl) lo0 2 *13
3P*
ENEN 5 11-VL, WM.NOlLEvE J n, n2 LowEi LEvEL BRILL REMMS(a~tl lo, 3p, 3p, *P --
59198.98 1 57.07
59199.28 3 57.33
59200.13 1 58.07
59200.41 3 58.32
59201.23 1 59.08
59201.51 3 59.34
59202.26 1 60.07
59202.49 3 60.3059203.24 1 61.06
59203.52 3 61.36
59204.21 1 62.10
59204.40 3 62.30
59205.08 1 63.07
59205.24 3 63.25
59205.92 1 64.05
59206.07 3 64.23
59206.78 1 65.1
59206.95 3 65.3
59207.54 1 66.1
59207.68 3 66.3
59208.29 1 67.1
59208.42 3 67.3
59209.02 1 68.1
59209.65 1 69.0
59210.27 1 70.0
59211.0 1 71
59211.6 1 72
59212.2 1 7359212.7 1 74
59213.2 1 75
59230 3
59375.4 2
59427 1
60290 3
60013 0
60395 1
60441.04 2
60454 3
60603 260630 1
60946 0
60968 1
61214 1
61245 3
61351.0 2
61365 1
61550 0
61562 1
61600.0 2
61696 3
61747.4 1
61766.0 3
61841.5 2
61852 1
61857 2
61964.6 0
61975 1
62008.6 2
62080 3
62112.7 1
62125.3 3
62180.4 2
62186 1
62260.5 0
62269 1
62297.7 2
62350 3
62374.4 1
62382.98 3
62424.2 2
62428 1
62433 2
5.0605 - - 8 95.0606 0 25.0611 - - 7 85.0613 0 2
5.0618 - - 7 95.0620 0 25.0624 - - 6 85.0625 - 25.0630 - - 6 85.0631 0 25.0636 - - 5 75.0637 - 25.0641 S- 65.0642 -
5.0646 - - 5 55.0647 -
5.0651 - - 5 55.0652 - 15.0655 - - 4 45.0656 -
5.0660 - - 4 45.0660 - 05.0664 - - 4 35.0668 - - 3 25.0671 - 2 15.0676 - - 2 15.0679 - - I 05.0683 - - 1 05.0686 - - I -5.0689 I5.079 - lO00C5.1680 - 2 0 0 h 5001
5.201 - - - 400i5.861 - 2 0 0 C5.623
2 0C5.960 - IOC 20 C 3 0 0 C6.0052 - 25 -
6.018 50C 9 00C6.171 - 5 0 e 1 0 0 i6.201 - - - 50h
6.575 3 0C
6.604 - - - looc6.953 - - 18 0 C 2 0 0 d
7.001 100c 5 0 0 h7.172 - 2 0 h 7 0 ;7.196 - - - SOi7.532 ISOC7.556 - -
3 0 C 100h7.632 - I5d 707.834 - 20C
7. 949 - - 200d 1 5d
7.992 3 0 0 d 3 0 0 h8.173 - 3 0 h 4 0 i8.200 - - - 451
8.212 IOC - -
8.498 80d
8.527 - -2 0 C
100h8.624 - 1Od 408.840 - OO0C8.945 - Od 4 0 d 1 2 0 d8.986 3 0 0 d 2 0 0 h
9.174 - 1Oh 4 0 d9.194 - - - 40;
9.470 6 0 d
9.503 - 5 C 2 0 C 8 0 h9.617 - ISi 40i9.836 - IC9.944 OC IOC 5 0 d 1 OOd9.9826 150 9 0 h
10.175 - 15h 4 0 i
10.193 - - - 30'
10.217 lOC - -
990
1000W°
1030
I 040
1050
1060
10.447 5 0 d
10.48 - IC 15 d 7 5 h 108°10.612 -
5 C 35
10.83 - 20C10.942 5C - 3 0 d 9 0 d 1090
10.9799 110 70h W.
62478.8 062485 1
62509.7 2
62549 3
62567.6 1
62573.95 3
62605.2 2
62605.9 1
62644.15 0
62649 1
62669.7 2
62703 3
62714.7 1
62719.40 3
62743.5 2
62745 1
62772.29 0
62776 162793.46 2
62818 3
62828.9 162832.51 3
62851.8 2
62853 1
62856.2 262873.45 0
62877 162891.0 2
62910 3
62919.42 1
62922.32 39s 3p o 62937.6 2
62938.6 1
62941.0 2
62954.57 0
3 62957.0 16g F 2 ? 62969.2 2
62986 3
lOs 3p 62992.46 162994.82 363007.4 2
63008.2 1
63010.3 263020.70 0
lls 3
P 0 63022.7 163033.1 2
63047 3
63052.26 1
63054.11 3
63064.4 2
63064.8 1
63067.6 212s 3p o 63075.23 0
63076.9 1
63085.65 2
63097.1 3
63101.70 1
63103.24 3
63111.9 2
63112.3 1
63114.2 2
13s 3
P2 ° 63120.71 0
63122.2 1
63129.53 2
63139.4 3
63143.09 1
63144.43 3
63151.7 2
63151.9 1
lls 3 o2 63153.6 2
63159.16 0
63160.3 1
11.173
11.178
11. 4295
11.46
11 * 607
11.85
11. 942
11.9786
12.172
12.18
12.4156
12.45
12.6044
12.83
12.941
12.9766
13.173
13.19
13.219
13.4045
13.4413.601
13.82
13.9394
13.9753
14.17
14.18
14.21
14. 395
14.43
14.60
14.84
14.939
14.97515.17
I5. 18
15.22
15.387
15.42
15.60
15. 8415.9739
15.974
16.17
16. 18
16.23
16.381
16.41
16.594
16.84
16.938
16.972
17.17
17. 18
17.22
17.376
17.41
17.590
17.84
17.937
17.972
18.17
18.17
18.22
18.375
18.41
616 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
TABLE II. (Continued).
Brown et al. 616
2525i W' 15s 3P2.-- - 25i 1 10°
50d
- 200C 2 0 d 7 0 h 1120- -
3 0 d
- 1C
2C - 3 0 d 8 0 d 1130f 50h W°
- - 20i Wa 16s 3
P20- - - 205 1140
45d
- - 2 0 d 7 0 h 116°- - 30i
- 20C
IC - 30 7 5 d 117040 40 W°
- - 15' 17s 3P°- - - 18i 118°4 C -
40d
- - 2 0 d 65' 1200- IOC 20'
- 20C
oC - 25 7 0 d 121030 4 5 h W.- - 15; 18s P2- - - 15'3C - -
35d
- - 2 0 d 6 0 h 123°- - 30i
od - 30 65 d 124025 4 0 h W.
- - 10 19s P2°122
2C - -
30d
- 1 5d 2 0 d 55h 1260- sC 15i- IOc
2c - 25 60 127°
2 C 40 Wa
- - lo 20s 3
p 0
- - - 10~
30
- 15 d 2 5 d 5 0 h 1290
- - 20;
- 1 5 C
- - 25 55 130"20 40 W.
- - Ioi 21s 3
P 0- - - 82
od - -
30
- lod 20 4 5 h 1310- lod 15i- 25C
- - 15 50 W°20 35 W°
- - 10i 22s 3P 0
- - -7 i
28
- 15 20 4 0 h 1320
800
810
83°
82°
83°
840
85°
860
880
890
900
920
930
940W°
970
98"
TABLE II. (Continued).
RELATIVE STRENGTHENEITO LOwNE LEVEL
LEVEL J nl n2 u BRIL REMPS
(lm-) ID 3P 3P 3P
263166.5
63175.1
63178.22
63179.29
63185.2
63187. 2
63191.81
63192.7
63197.9
63205.5
63208.13
63209.01
63214.2
63214.4
63216.363219.67
63220.5
63225.2
63231.5
63233.90
63234.62
63239.1
63239.3
63240.5
63243.86
63244.5
63248.7
63254.43
63256.18
63256.82
63260.5
63260.8
63262.0
63264.81
63265.4
63268.7
63274.0
63275.62
63276.19
63279.4
63279.6
63283.29
63284.0
63286.6
63290.99
63292.62
63293.15
63295.9
63296.0
63299.4
63299.7
63302.48
63306.28
63307.70
63308.12
63310.5
63310.7
63313.67
63314.1
63316.39
63319.9
63321.06
63321.39
63323.4
63323.6
63326.39
63326.7
63328.79
63331.92
63332.93
63333.26
63334.9
63334.9
20
od
20
od
18.59
18.84
18.938
18.972
19.16
19.22
19.373
19.40
19.58
19.84
19.938
19. 970
20.16
20.17
20.2420.368
20.40
20.58
20.84
20.939
20.969
21.160
21.17
21.22
21.369
21.40
21.59
21. 855
21.938
21.969
22.15
22.16
22.22
22.366
22.40
22.57
22.85
22.938
22.969
23.15
23.16
23.372
23.41
23.57
23.833
23.934
23.967
24.14
24.15
24.37
24.39
24. 575
24.836
24.936
24.966
25.14
25.15
25.369
25.40
25.573
25.85
25.937
25.963
26.12
26.14
26.371
26.40
26.574
26. 846
26.935
26.965
27.11
27.11
j8d
30
jod
,od
1 2 d
30
25
i5
,od
25
98d
2od
20
5d
5d
20
6
8
15
S
10
1
10
5
26
209'
9
3i
25
188i
8
3
22
15
6
5
2
22
102i
2
20
8
4
18
4
0
15
8
2
15
od
15
09
12
0
10
12
10
8
TABLE II. (Continued).RELRTIVE STMENGTH
ENE , LowER LEVEL ,.LEvEL J n0 n 2 83 RILL EMS(cm-1) ID2 -3P2 3P 3PO
- 315d 5is 63337.65
63337.945 W. 63339.78
63342.6
6i 63343.50
63343.8763345.5
4 0 h 1330 63345.563347.80
63348. 1
40 Wa 63349.7
63352.2
24s 3P 0 63353.13
5; 63353.37
63355.0
63355.1
40h 1340 63356.92
63357.2
63358.735 W. 63361.0
63361.71
Si 25s 3P 2 . 63361.96
63363.6
63365.17
63365.3
4 0 h 135° 63366.8
63369.0
63369.5635 W. 63369.70
63370.6
4 i 63372.66
26s 3
P 0 63372.9
63374.0
63376.2
35i 136' 63376.60
63376.7263379.44
30 63379.7
63380.8
27s 3
p 0 63382.4
3' 63383.01
63383.11
30h 1370 63385.58
63385.7
63388.2
25 63388.86
63389.01
2i 63391.24
28s 3P2 ° 63391.4
63394.28
2 5 h 1380 63394.35
63396.45
63396.7
25 63399.15
63399.25
2' 63401.22
29s 3P 2 o 63401.4
63403.74
2 5 h 63403.76
63405.55
63405.7
20 63407.9463407.94
30s 3P2° 63409.65
63409.7
63411. 8
20h 63411.8563413.42
63413.6
20 63415.38
63415.4
31s 3
P 0 63416.83
1' 63417.0
27.366
27.3927.56727.84
27.929
27.966
28.13
28.13
28.366
28.40
28.56
28.83
28.937
28.963
29.15
29.16
29.365
29.40
29.57
29.85
29.933
29.964
30.17
30.37
30.4
30.6
30.9
30.94
30.96
31.1
31.37
31.4
31.6
31.931.94
31.96
32.37
32.4
32.6
32.8
32.93
32.95
33.36
33.4
33.8
33.93
33.96
34.36
34.4
34.94
34.95
35.37
35.4
35.92
35.94
36.37
36.4
36.93
36.94
37.36
37.4
37.9437.94
38.37
38.4
38.9
38.95
39.38
39.4
39.94
39.9
40.3640.4
2
6d
1 6
6
I 0
1It
617 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
122 0 h
0 18
32s 3P 2oj
17
0'
- 4d
- 8
6 12
- 4d
- 4d
- 3 f
6 10
5 10
5 9
5 8
4 8
3 7
2 7
33 3P 2
0 16
0
9
0
34V 3o p
0 15
0
8
0
3o35V P2 o
0 14
8
0
0 13
7
0 12
6- 14
0 11
6- 13h
0 10
5
- 12h
0 10
Id6
S
0
4
0
4
10
10h
9
10h
9
9
0
12
0
0
0
10
0
1
-
9d
- 12d
- j0d
17h
16h
I
I
Brown et al. 617
TABLE II. (Continued).
RELATIVE STREGTH
LEVEL J n n2o Lo LEVEL BILL ROES-(a I) 1 02 3 'I 3P,
63418.6 1 40.9 - - 0 8
63418.73 3 40.95 1 5
63420.02 0 41.36 3
63420.2 1 41.4 - I - 9
63421.7 1 41.9 - - 0 8
63421.76 3 41.93 1 5
63423.07 0 42.37 3
63423.I 1 42.4 - ] - 8
63424.6 1 42.9 - - 0 7
63424.70 3 42.95 1 5
63425.7 1 43.3 - 0 - 7
63425.8 0 43.4 2
63427.2 1 43. 9 - - 0 7
63427.36 3 43.95 1 5
63428.4 0 44.4 1
63428.5 1 44.4 - 0 - 7
63429.7 1 44.9 - - 0 6
63429.84 3 44.94 1 4
63430.8 1 45.3 - 0 - 663430.9 0 45.4 1
63432.1 1 45.9 - - 0 5
63432.18 3 45.94 1 4
63433.1 1 46.3 - 0 - 5
63433.2 0 46.4 1
63434.3 1 46.9 - - - 5
63434.37 3 46.94 0 4
63435.3 1 47.4 - 0 - 4
63436.2 1 47.8 - - - 463436.42 3 47.93 0 4
TABLE II. (Continued).
RELATIVE STRENTH
LEva J nl n2 LowE LEVEL BRILL REHerS(a"-lJ ID, 3p, 3p, 3po,
63437.5 1 48.5 - - - 463438.3 1 48.9 - - - 463438.38 3 48.95 0 3
63439.5 1 49.6 - - - 3
63440.1 I 49.9 - - - 3
63440.21 3 49.95 0 3
63441.2 1 50.5 - - - 2
63441.7 1 50.8 - - - 2
63441.86 3 50.92 0 3
63442.9 1 51.6 - - - 2
63443.3 1 51.8 - - - I
63443.58 3 51.99 0 2
63444.4 1 52.5 - - - 1
63444.9 1 52.9 - - - I
63445.1 3 53.0 - 2
63445.9 1 53.5 - - -
63446.3 1 53.8 - - - Of
63446.6 3 54.0 - 2
63447.4 1 54.6 - - - 13
63447.9 3 55.0 0 1
63448.8 1 55.7 - - - 09
63449. 1 3 55.9 0 -
63450.0 1 56.7 - - - 03
63450.4 3 57.0 0 1
63451.5 3 57.9 0 0
63452.5 3 58.9 0 -
63453.6 3 59.9 0 -
75952 1 1390
aThe third and fourth columns contain the effective quantum numbers based on the 1/2=59232.69 cm 1 and the 2 P3,2 =63484.18cm-' ionization limits, respectively. The next four columns summarize the observed combinations of the reported levels withthe levels of the 5p2 1D and 3 P terms. A number in any of these columns gives the estimated intensity of the spectral line fromTable I. A dash in any of the four columns indicates an allowed transition not observed in the present work. The level numbersin column nine are from Ref. 2, while a W indicates the level was listed in Ref. 3. Several energy levels assigned to electronicconfigurations other than 5pns or 5pnd have been designated in the remarks column. In keeping with our multichannel quantumdefect treatment, the effective quantum numbers provide the most useful level labels. Using the fractional part of n* from thistable, along with Figs. 5, 6, 7, and 8, one can estimate the fraction iVI2 of each close-coupled channel in the given energylevel.Indicates transitions outside our wavelength region observed in emission (see Ref. 2). When no transitions were measured inthis work, energy levels from Ref. 2 have been included in column 1 for completeness.
'Very diffuse line.dDiffuse, symmetrical line.'Diffuse shoulder.fShoulder measurement.'Blended line. If more than one transition is indicated, the first entry in the table was judged to be the major contributor to theline.hDiffuse, unsymmetrical line. An emissionlike feature appears to the red of the measured position.'Diffuse, unsymmetrical line. An emissionlike feature appears to the violet of the measured position.
Although the reader is referred to Brill's2 and Wil-son's3 theses for summaries of previous level designa-tions, whenever possible we have included Brill's levelnumbers in Table II. Transitions to levels 1°-15°, 170,180, 230, 390, and 70O were not observed in the presentwork. The energies for these levels in Table II areBrill's, rounded to the nearest 0. 01 cm-. Brill'senergies for levels 16°-49°, 510, 520, 560, and 58°-600 were listed with absolute uncertainties of ±f 0. 015cm-' or less. Because of the slightly higher uncertain-ties in our data, Brill's energies for these levels prob-ably are more accurate than the values appearing inTable II. Above 60°, the energy levels in Table II aresuperior to previous data in both completeness and ac -curacy. Although we have attempted to indicate levelsabove 60° listed by Brill and by Wilson, in many cases
the correlation between the present work and previouslow-resolution results is not obvious. In ambiguouscases, the level number (or a Wif the level is listed byWilson) was given to a nearby level of the same J valueif one was found within a reasonable energy interval.
The data in Table II for the levels below the 2P 1 2
limit were used to evaluate the multichannel param-eters 11,u and Ui<: in Eq. (2). The least-squares itera-tive procedures used to determine the best values ofthese parameters are similar to those previously dis-cussed. 8 Table III gives the values of the matrix ele-ments determined in this work along with the eigen-quantum defects g,0, for the close-coupled states.
Figures 1-4 are reproductions of plots of the(n*)modl vs (nl*)modl for the J levels observed below
618 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Brown et aL 618
TABLE III. Transformation matrices Uia and eigenquantum defects for 5pns and 5pnd of SnI.a
d3 P; s 3Po
J=O N 1 2
(32) 1 0.9960 0.089041 6<n 1 <19 N=14
2 2 2 0. 08904 0.9960 j u=0.0037
0. 6791 0. 1812
d3D', d
1P-, d
3P. s
3P1p s'P
J=1 1 2 3 4 5
(2 1. 3811 0.0531 - 0.0564 0.4292 - 0. 8153
(1° 2 -0. 5153 0. 1669 -0. 5792 -0. 4396 -0. 4217 4<nt <37 N=61
0, 2a t 3 0. 6902 + 0.3782 - 0. 0596 - 0. 6134 0. 0276 cp=0.013
(I 2)t 4 -0. 1858 - 0. 2634 + 0.7266 - 0.4599 - 0. 3957
(L2, 2) 5 0.2799 - 0. 8701 - 0. 3603 - 0. 1864 0. 0029
0. 942 0.683 0.155 0.060 0.215
d3
P2 d3D2 d
3F2 d'D2 s
3 P2
J=2 i 1 2 3 4 5
, q1 - 0.7519 0.2016 - 0. 5909 - 0.2117 0
(3 3 2 0.3130 0.5652 - 0. 4311 0.6298 0
(2 3242 3 0. 3139 -0. 6953 -0. 6460 0. 0258 0 4<n1 <48 N=79
(1 a ) 4 0.4880 0.3954 -0.2184 -0.7469 0 a0.010
( ,2250 0 0 01
L ° 6924 0.0714 0.5988 0.7256 0. 17
d tF d3F3 d3D3
J=3 1 2 3
2 2 1 -0. 1304 0. 5153 0. 8470 5<n1 <65 N58
2 2, L3 0. 8148 0. 5424 - 0.2046 0. 025
3 -0.5648 0.6635 -0.4906
, 0. 965 0.707 0.0986
aThe matrix elements Ui, appear in the square brackets. The LS labels on the columns and the jj labels on the rows indicate the
starting point of the iterative fitting procedure (see text). Since the Ui,'s were adjusted considerably, these labels do not neces-
sarily reflect the properties of the a and i states. Included on the right are the range of n* values considered, the actual number
of energy levels used, and the standard deviation of n* of the resultant fit.bThe ns 3 P2 levels were assumed to have negligible interaction with the nd J = 2 levels.
the 512P 1?,2 limit. These figures include portions ofthe function n*=G(n2*) together with the functions n*=f (nj*) computed from the parameters in Table III. Thelevels indicated by open circles belong to levels withlow values of ni, while levels indicated by triangles be-long to interlopers from 5s5p3 . These levels wereomitted from the parametric fitting of the f functions.The remaining levels were judged to be representativeof the limiting behavior of f(n*) i* and were used todetermine the parameters in Table III. To partiallycompensate for the density of points near n1 -oc, the
data were weighted by a factor (n'*)-1 2. In addition,a few points on the steep portions of the f curves weregiven additional weight to speed the convergence of theiterative procedure.
The composition of a given Rydberg level in termsof the close-coupled eigenstates can be determined from
the mixing coefficients Ma computed using Eq. (4) andthe data in Table III. Figures 5-8, which are plots of
(, Vs (n2 )modl for J=O through J= 3, respectively,summarize the results of such calculations for Sni.The composition of the close-coupled portion of thewave function of any level is given by the M2 values ona vertical line drawn through the level's (nf*)madl value.The n* values listed in Table II together with Figs. 5-8define the composition of levels near El.. belonging tothe 5pns and 5pnd channels with deviations expected inthe vicinity of interloper levels.
The 5s5p3 configuration contributes 3 '5S', 1"3 p0 , andl, 3
D' terms to the structure of Sni. As noted above,extra levels occur in the Sni electronic structure andthe energy-level patterns deviate from the regular fcurves in the vicinity of these levels. Many levels areaffected and any attempt to identify a given level as
619 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Brown et al 619
0.0
(n* md L
0.5-
6 8 9 10 i
0.0 0.5 1.0(n2)mod 1
FIG. 1. Lu-Fano plot for J = 0 odd-parity levels of Sn i ob-served below the 2
PI/ 2 limit. The thin black curves are thefunction nt = G(n2) from Eq. (1) plotted modulo 1. The num-bers on these curves indicate the principal part of n*'(i. e.the curve numbered 4 corresponds to 4 < z* - 5). The heavycurve is the calculated function n* =f(n2') [the solutions of Eq.(2)] plotted modulo 1. The solid data points indicate the dataused in the least-squares parametric fitting, the open circlesthe data not included (see text) and the solid triangle the5s5p3 3P' level.
purely 5s5p3 is artificial. As in the analogous situa-tion in Ge i, the designation of levels associated with5s5p 3 in Table II was based largely on the assumptionthat all levels below the interloper are perturbed tolower energies and all levels above are perturbed up-wards. Our designation of the 5 S2O level at 39 625 cm-1
is unchanged from previous assignments. The 3 DO term
0.0- D B E
A 2A
(nmmod I
0.5 -
9 10 II 12 131415 20
0.0 D10 B'Q t El 1.0
(f2'mod 1
F 1G. 2. Lu-F ano Plot for the J- 1 odd-parity 1evels of Sni.The triangles mark the 5s5p3 3 P, 3D,, and 3SI levels. Seecaption to Fig. 1.
0.0 Y 0;5 B 1.0(n2)
2mod IFIG. 3. Lu-Fano plot for the J=2 odd-parity levels of Snz.The solid triangles mark the 5s5p3 5S2, 3 P2, and 3 D2 levels.The diamonds mark levels belonging to the 5pns 3P` channelwhich was omitted from the parametric fitting (see text), andthe square indicates a level at n4 = 6. 0052 which was tentativelyassigned to 5p6g3 F2. See caption to Fig. 1.
in Table II is regular and consists of levels 280, 290,and 30° near 53 600 cm-'. We have chosen to assignlevels 170, 190, and 200 to the 3
P0 term and the J=1level at 75 952 cm-' from Wilson to 'Pa. We have notassigned a level to 'D', however; the level at 59105cm-1 assigned tentatively to 5P5g 3 F2 is a possibility.Attempts at correlating the sp3 levels using Slaterparameters were not successful.
We have observed twelve J= 3 levels which do not fit
( li)mod 1
I n
(n2)mod 1FIG. 4. Lu-Fano plot for the J = 3 odd-parity levels of Sn I.The solid triangle indicates the 5s5p3 3D3 level and the opensquares indicate tho levels which have been assigned to the5pngJ=3 series converging on the 2 P,/ 2 limit (see text). Seecaption to Fig. 1.
620 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
(I
Iv
Brown et al. 620
FIG. 5. Plot of the squaresof the mixing coefficientsM' (-, a =1; - -- , a =2),
VS (nn)mod I for J = 0 levelsof SnI.
1,
M
0
C
0-I N
2 NIl I
51 �I II II \ I /
I * I
0.0 0.5 1.0 0.50.0 (n) 1
2 mo.d I
1.0
FIG. 6. Piot ofM2 vs (n4)modI for J= 1 levels of SnI. (---,
a=1; - -, a=2; - a=3; --- , a=4; --- a = 5). The
left half of the figure corresponds to points on the branch ofthe Lu-Fano curve traced from A-B, B' -C in Fig. 2, whilethe right half corresponds to points on the branch C' -D,D'-E, E'-A'.
1.0.
2/ ''.'
0.5-
FIG. 7. Plot of M2 vs
Nd ( l2)madI for J=2 levels ofS' \ | /nI( a 1 - - -,
0.0- . . . a=4). The upper figure
0.0 0.5 1.0 corresponds to points onthe branch A-B, B'-A'
1.0- Ain Fig. 3 while the lowerifigure corresponds to
\ points on the curveX-X,I Y-
M2
0.5,
0.0 0.5 1 .0
0.0 0.5(n) 10(2mod 1
FIG. 8. Plot of M2 VS (n2)modI for J=3 levels of Sni (-, a=1;
-a=2; --- , a=3).
into the level schemes for 5pnd or 5s5p3. These levels(see open squares in Fig. 4) form a series with nearlyintegral n* values which converge regularly on the2P 1 / 2 limit. We have assigned these levels to 5png
(5' n- 18). It should be noted that the 5p8g and a J= 3level from nd are nearly coincident (see the levels at57513 and 57518 cm-'). These levels interact slightly,as can be seen from small energy shifts in the ob-served energies from their interpolated positions andfrom intensity anomalies in their transitions from
5p2 3 p2. Finally, two J =2 levels (at 59105.62 and
60 441.04 cm 1 ) have been tentatively assigned to5p5g 3F2 and 5p6g3F2 levels, with effective quantumnumbers 5.0062 and 6. 0050 based on 5p P3/2 .
In summary, with the aid of multichannel quantum de-fect theory we have been able to provide an essentiallycomplete assignment of the high dispersion absorptionspectrum of Sni in the 1580-2040 A region. Except forfive weak lines, all observed spectral features in TableI have been identified.
*Ball Brothers Research Corporation.tPresent Address: NASA Headquarters, Washington, D.C.,
20546.$Partially supportedby the E. 0. HulburtCenter for Space Re-
search.'C. E. Moore, Atomic Energy Levels, III, Natl. Bur. Stand.
(U.S.), Circ. No. 467 (U.S. GPO, Washington, D.C., 1958),p. 74.
2 W. G. Brill, "The Arc Spectrum of Tin," Thesis (PurdueUniversity, Lafayette, Ind., 1964).
3J. M. Wilson, "The Atomic Absorption Spectra of Silicon,Germanium, Tin and Lead," Thesis (Imperial Coll. of Sci.and Tech. of London, 1964).
4K. T. Lu and U. Fano, "Graphical analysis of perturbedRydberg series," Phys. Rev. A 2, 81-86 (1970).
5U. Feldman, C. M. Brown, G. A. Doschek, C. E. Moore,and F. D. Rosenberg, "XUVspectrumofCiobservedfromSky-lab during a solar flare," J. Opt. Soc. Am. 66, 853-859 (1976).
GC. M. Brown, S. G. Tilford, R. Tousey, and M. L. Ginter,"Absorption spectrum of Sii between 1500 and 1900 A," J.Opt. Soc. Am. 64, 1665-1682 (1974).
7C. M. Brown, S. G. Tilford, and M. L. Ginter, "Extendedidentifications of odd energy levels of Sii: Lu-Fano graphi-cal analysis," J. Opt.Soc. Am. 65, 385-388 (1975).
8C. M. Brown, S. G. Tilford, and M. L. Ginter, "Absorption
spectrum of Gei between 1500 and 1900 A," J. Opt. Soc. Am.67, 584-606 (1977) (this issue).
621 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977 Brown et al. 621l
9K. T. Lu, "Spectroscopy and collision theory. The Xe ab-sorption spectrum," Phys. Rev. A 4, 579-596 (1971).
"0 C. M. Lee and K. T. Lu, "Spectroscopy and collision theory.II. The Ar absorption spectrum," Phys. Rev. A 8, 1241-1257 (1971).
tHA set of parameters (designated pa',, Da, and Uia with thenumbers of i's and at's equal to the number of channels beingconsidered) result from separating the state representing thesystem composed of Rydberg electrons plus a charged ioncore into two regimes and matching the states appropriatein the two regimes at their common boundaries. In the first(close-coupled, short-range) regime, the Rydberg electronsare strongly correlated with electrons in the core. In thesecond (loose-coupled, long-range) regime, the electrons aresubject mainly to attractions from a centralized charged ioncore, and the eigenstates appropriate at these large electron-core separations are the Coulomb functions. The total stateof the system is then a linear combination of the above eigen-states with the coefficients in the combination (i. e., the mix-ing coefficients) determined by the boundary conditions at in-finity and at some point ro where the two solutions join. Forthis situation the wavefunctions for r-ro can be represented
(see Ref. 9) as
OWt )= F, d6[f(;z*, li, r) F, Ui,,(cos7rp,ll)Mb,
+ g(0' , lid,r) Uic (simry a)Ma]
where a and i label the close-coupled and loose-coupled rep-resentations, respectively. In this expression, the ion core,spins, and angular parts are represented by hi, f and g arethe regular and irregular Coulomb functions, the Uia arematrix elements of the transformation between the closecoupled and loose coupled configurations, the p1
a are eigen-quantum defects of the close-coupled eigenstates, and theMa (denoted U a in Ref. 10 andAa in Ref. 9) are the coeffi-cients of the linear combinations of close-coupled statesmaking up a given level.
12C. M. Brown, R. H. Naber, S. G. Tilford, and M. L. Gin-ter, "High temperature furnace system for vacuum ultravio-let spectroscopic studies," Appl. Opt. 12, 1858-1864 (1973).
13 Gallard-Schlesinger Chem., 99. 999% purity.14C. M. Brown, S. G. Tilford, and M. L. Ginter (unpublished
data, 1976).
Absorption coefficient of pure water at 488 and 541.5 nm byadiabatic laser calorimetry*
M. Hass and J. W. DavissonNaval Research'Laboratory, Washington, D.C. 20375
(Received 22 December 1976)
The absorption coefficient of pure water was found to be 0.00017 cm-' at 488 nm and 0.00029 cm-' at 541.5nm using adiabatic laser calorimetric techniques. These values are in good agreement with the generallyaccepted long-path transmission spectra of Clarke and James.
INTRODUCTION
The transmission of light through water has been thesubject of many investigations. ' It has been establishedthat there is an acute minimum for the attenuation in thevisible part of the spectrum. However, there have beenlarge differences among various investigators about themagnitude of the attenuation at the minimum. 2 It is notclear whether these differences are due to the nature ofthe technique or to the purity of the water. 3 All of theseprevious determinations have been carried out usinglong-path-length transmission cells which require care-ful evaluation of cell reflections and preparation ofwater free from absorbing contaminants and scatteringcenters.
In this present investigation, adiabatic laser calorim-etry has been employed which avoids many of the prob-lems of long-path-length transmission methods. Thismethod has been widely employed for studying absorp-tion in low-loss solid materials. 4
EXPERIMENTAL
A simple modification of the usual experimental ar-rangement for studying absorption coefficients for solidmaterials has been employed4'5 and is illustrated inFig. 1. Laser light is weakly focused along the axis ofa vertical liquid Raman cell 8 cm long and 0. 6 cm in
622 J. Opt. Soc. Am., Vol. 67, No. 5, May 1977
diameter. This cell is located inside of the blackenedenclosure and supported by nylon threads to reduce theheat losses. Absorption of laser light by the liquid con-tained in the cell results in heating and the resulting
DIFFERENTIALTHERMOCOUPLE
METER
CALORIMETER
LENS
FIG. 1. Experimental arrangement for adiabatic laser cal-orimetry of liquids. The liquid is contained in a vertical cell.
Copyright (D 1977 by the Optical Society of America 622
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