Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power...
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Transcript of Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power...
![Page 1: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/1.jpg)
Measurements of the 27Al(d,)25Mg excitation functions
A. GurbichInstitute of Physics and Power Engineering
Obninsk, Russia
![Page 2: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/2.jpg)
Determination of the target thickness
700 725 750 775 800 825 850 8750
500
1000
1500
2000
2500
d=3650*1015 at./cm2
27Al(d,d)E
d=1100 keV
Cou
nts/
chan
nel
Channel
E=82.5 keV
990 1000 1010 1020 1030 10400
5000
10000
15000
20000
Experimental Simulated
Target thickness =
3680x1015
at./cm2Y
, re
l. un
its
Ep, keV
RBS PIGE
![Page 3: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/3.jpg)
A typical spectrum of -particles for 27Al(d,)25Mg reaction
192 256 320 384 448 5120
200
400
600
800
Ed = 2300 keV
Q = +6706.7 keV
lab=150o
27Al(d,)25Mg
Leve
l ene
rgy,
keV g.s.
585.1974.91611.81964.6
Cou
nts/
Cha
nnel
Channel Number
![Page 4: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/4.jpg)
The excitation functions for 27Al(d,)25Mg reaction
0.0
0.2
0.4
0.6
0.827
Al(d,0)
25Mg
0.0
0.227
Al(d,1)
25Mg
0.0
0.2
0.427
Al(d,2)
25Mg
d/d la
b, m
b/sr
0.0
0.2
0.427
Al(d,3)
25Mg
1600 1800 2000 2200 24000.0
0.2
27Al(d,
4)
25Mg
Energy, keV
![Page 5: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/5.jpg)
Uncertainty Budget
Source Uncertainty Comment
Current integration 2% Calibrated with a precise amperemeter
Solid angle 2.5% Direct geometrical measurement
Target thickness 2% Two independent measurements by PIGE and RBS agree within 0.8%
Statistics 1-3% 1
Total <4.5%
Beam energy 0.2% Calibration by the 27Al(p,γ) resonance at 991.9 keV and the 7Li(p,n) reaction threshold at 1880.4 keV
Detector angle 1º
![Page 6: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/6.jpg)
The comparison of the present results with other data for 27Al(d,0)25Mg
1000 1200 1400 1600 1800 2000 2200 24000.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
d
/d l
ab, m
b/sr
Energy, keV
Pellegrino, unpublished, IBANDL
Gadioli, Nuovo Chimento 38 (1965) 1105
This work
![Page 7: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/7.jpg)
The comparison of the present results with Pellegrino’s data for 27Al(d,2)25Mg
1000 1200 1400 1600 1800 2000 2200 2400
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
Q=5731 keV
27Al(d,2)
25Mg
=150o
This workPellegrino
d/d,
mb/
sr
Energy, keV
![Page 8: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/8.jpg)
Measurements of the 27Al(d,p)28Al excitation functions
![Page 9: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/9.jpg)
A typical spectrum of protons for the 27Al(d,p)28Al reaction
400 500 600 700 8000
200
400
600
800
1000
1200
1400
1600
lab=150oEd = 2000 keV
Q = +5500.5 keV 27Al(d,p)28AlL
eve
l En
erg
y, k
eV g.s.
30.6 972.41013.61372.91620.31622.9
Cou
nts/
Cha
nnel
Channel Number
![Page 10: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/10.jpg)
The excitation functions for 27Al(d,p)28Al reaction
0.0
0.2
0.4
0.6
0.8
1.027
Al(d,p0+1
)28
Al
0.0
0.2
0.4 27Al(d,p
2+3)
28Al
0.0
0.227
Al(d,p4)
28Al
d/d,
mb/
sr
1400 1600 1800 2000 22000.0
0.2
Energy, keV
27Al(d,p
5+6)
28Al
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The comparison of the present results with other data for 27Al(d,p0+1)28Al
1000 1250 1500 1750 2000 2250 2500 2750 30000.0
0.2
0.4
0.6
0.8
1.0
=150o
27Al(d,p0+1)
28Al
d
/d la
b, m
b/sr
Energy, keV
Pellegrino Gadioli Lin This work
![Page 12: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/12.jpg)
The comparison of the present results with other data for 27Al(d,p2+3)28Al
1000 1250 1500 1750 2000 2250 2500 2750 30000.0
0.1
0.2
0.3
0.4
0.5
0.6
=150o
27Al(d,p2+3)
28Al
Pellegrino Gadioli Lin This work
d/d l
ab, m
b/sr
Energy, keV
![Page 13: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/13.jpg)
Benchmark
550 600 650 700 750 8000
5000
10000
15000
20000
27Al(d,p5+6)
27Al(d,p4)
27Al(d,p2+3
)
27Al(d,p0+1
)
27Al(d,p) (E
d = 1950 keV)
Experimental Simulated
Cou
nts/
chan
nel
Channel Number
![Page 14: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/14.jpg)
Measurements of the 27Al(p,)28Si thick target yield
![Page 15: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/15.jpg)
A typical pulse-height spectrum for -rays emitted in p + 27Al reaction
100 200 300 400 5000
5000
10000
15000
20000
25000
NaI(Tl)160x100 mm
Ep = 1005 keV = 90
o
1779 keV 27
Al(p,)28Si40
K
9 MeV 27
Al(p,)28Si
x5
Cou
nts/
Cha
nnel
Channel Number
p
E=1779 keV
E=10764 keV
1779 keV
12543 keV
28Si
27Al
![Page 16: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/16.jpg)
Characteristics of the gamma source used in the work
Major radionuclide
Initial radioactivity according to certificate, kBk
Uncertainty of the acivity, %, (p=0.95)
Half-decay Radioactivity on the day of the measurement, kBk
Gamma-ray energy, keV
Gamma-ray intensity, %
88Y 276.0 on 01.12.2003
1.7 106.65 d 0.358 898 1836 2734
93.70.3
99.20.3
0.710.07
Characteristics of the gamma rays emitted in the decay of the 27Al resonance level excited at Ep=991.9 keV
Transition (level energies in MeV)
Gamma-ray energies, keV Gamma-ray intensities (%)
Coefficient A2
Coefficient A4
R 1778.9 10764 94.0±9.4 [Azuma et al]
94.1±9.4 [Scott & Lusby]
94.8±1.5 [Anttila et al.]
95 [Meyer et al.]
0.0510.005 -0.0320.005
1778.9 g.s. 1778.9 77±7.7 [Azuma et al.]
72.4±3.6 [Scott & Lusby]
76.6±1.5 [Anttila et al.]
75 [Meyer et al.]
0.0000.003 -0.0160.003
R.E.Azuma et al. Can. J. Phys. 44 (1966) 3075 H.L.Scot, T.F.Lusby, NIM 131 (1975) 517 A.Anttila et al. NIM 147 (1977) 501 M.A.Meyer et al. Nucl. Phys. A250 (1975) 235
2 2 4 4( ) 1 (cos ) (cos )W A P A P
1 2 1
2 1 2
I NM
I N
0
30
60
90
120
150
180
210
240
270
300
330
0.10.20.30.40.50.60.70.80.91.01.11.2
R => 1779 1779 => 0
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The p + 27Al-ray yield for E=9-11 MeV
1000 1200 1400 1600 18000
5
10
15
20
-y
ield
, (nC
*sr)
-1
Ep, keV
27Al(p,)28SiE = 10.78 MeV
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Measurements of the 14N(d,)12C excitation functions
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Experimental details
Target: C5H5N5 (~1.41018 cm-2) evaporated on the silver backing
0.3 mg/cm2 thick.
Normalization: at 972 keV against Davies J.A., Jackman T.E., Plattner, H., Bubb I. Absolute calibration of 14N(d,) and 14N(d,p) reactions for surface adsorption studies. // Nucl. Instr. and Meth. 218 (1983) 141.
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Typical d + 14N spectrum
(12 m aluminum filtering foil, low bias voltage)
0 50 100 150 200 250 300 3500
5000
10000
15000
20000
25000
30000
35000
40000
=150o E
d = 1400 keV
14N(d,
1)
16O(d,p
1)
14N(d,p
4+5)
14N(d,p
3)
16O(d,p
0)
12C(d,p
0)
14N(d,p
1+2)
14N(d,
0)
13C(d,p0)
14N(d,p
0)
x 10Cou
nts/
cha
nnel
Channel
Reaction Q, keV E3, keV
d,0 13574 9914 d,1 9135 6862 d,p0 8609 8675 d,p1 3339 3910 d,p2 3305 3879 d,p3 2886 3504 d,p4 1455 2231 d,p5 1305 2099
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The excitation functions for the 14N(d,)12C reaction
600 800 1000 1200 1400 1600 1800 2000 22000.0
0.5
1.0
1.5
2.014
N(d,0)
12C
14N(d,
1)
12C
This work (Run 1) This work (Run 2) [Pellegrino 2004] [Amsel 1969]
d/d l
ab, m
b/sr
Energy, keV
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
This work (Run 1) This work (Run 2) [Pellegrino 2004] [Amsel 1969]
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Measurements of the 14N(d,p)15N excitation functions
![Page 23: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/23.jpg)
Typical d + 14N spectrum (300 m aluminum filtering foil)
160 180 200 220 2400
50
100
150
200
250
300
350
400
450
50014N(d,p
0)E
d = 1400 keV
Cou
nts/
chan
nel
Channel Number
![Page 24: Measurements of the 27 Al(d, ) 25 Mg excitation functions A. Gurbich Institute of Physics and Power Engineering Obninsk, Russia.](https://reader038.fdocuments.us/reader038/viewer/2022102819/5697bfd71a28abf838cae442/html5/thumbnails/24.jpg)
The excitation functions for the 14N(d,p)15N reaction
600 800 1000 1200 1400 1600 1800 2000 22000.0
0.5
1.0
1.5
2.0
2.5
3.0
14N(d,p0)
15N
This work Pellegrino 2004 Amsel 1969 Koenig 1977
This work Pellegrino 2004 Simpson 1984 Shorin 1984 Koenig 1977
d/d l
ab, m
b/sr
Energy, keV
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
14N(d,p1+2)
15N