Dinner: Days Chinese Buffet All you can eat £11.99 19:30

12
Dinner: Days Chinese Buffet All you can eat £11.99 19:30 Brighton_PRESPEC_Jan_2011

description

Dinner: Days Chinese Buffet All you can eat £11.99 19:30. Deformation and shape changes around 106 Zr. Known prolate nuclei. 113 Tc. 111 Tc: Urban et al. EPJA24 (2005) 161 116 Pd: Hua et al. Phys. Letts. B562 (2003) 201. Diagram modified from Urban et al. 112 Tc. 113 Tc. - PowerPoint PPT Presentation

Transcript of Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Page 1: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Dinner: Days Chinese BuffetAll you can eat £11.99

19:30

Brighton_PRESPEC_Jan_2011

Page 2: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

Page 3: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

Deformation and shape changes around 106Zr

Page 4: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

111Tc: Urban et al. EPJA24 (2005) 161

116Pd: Hua et al. Phys. Letts. B562 (2003) 201

113TcKnown prolate nuclei

Diagram modified from Urban et alBrighton_PRESPEC_Jan_2011

Page 5: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

MSU: Folden et al; Phys Rev C79 (2009) 064318

113Tc

112Tc

Coincidences are weak but clear:

92 keV gate

258 keV gate

Page 6: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

112Tc < 2

Z=43, N=69 => four combinations of parities for energy surface calculations

g.s –, +

~400 keV –, -

~400 keV +, +

oblate, ~0.2

Page 7: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

5/2[422],7/2[523]

Brighton_PRESPEC_Jan_2011

Page 8: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

5/2[422]7/2[523]

92 keV transition

258 keV transition

Measured hindrance for 258 keV E1 is 107 which is not unreasonable =>isomerism caused by shape change

112Tc

Page 9: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

113Tc

Z=43, N=60 => positive and negative parity surfaces

oblate, ~0.2

g.s +ve

triaxial -ve

5/2+

5/2-

5/2[422]

Measured hindrance for 114 keV E1 is 3 x 106 which is not unreasonable =>isomerism caused by shape change

114triaxial

oblate

Page 10: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Brighton_PRESPEC_Jan_2011

Mus

ic

Summary: Isomers observed in 112,113Tc......due to (predicted) shape changeRecently published in Phys Rev C82

Analysis of beta-decay around106Zr is ongoing

Page 11: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Next plans:

Brighton_PRESPEC_Jan_2011

-gamma-gamma coincidences to get lifetimes

=> matrix elements.

Page 12: Dinner: Days Chinese Buffet All you can eat £11.99 19:30

Collaborators on 112,113Tc

Brighton_PRESPEC_Jan_2011

A.M.Bruce, S.Lalkovski, A.M.Denis BacelarUniversity of Brighton, UKA.B.Garnsworthy, S.Steer, S.Pietri, Zs.Podolyák, G.F.Farrelly, W.Gelletly, I.J.Cullen, P.M.WalkerUniversity of Surrey, UKM.Górska, P.Bednarczyk, L.Caceres, P.Doornenbal, J.Gerl, J.Grębosz, I.Kojouharov, N.Kurz, W.Prokopowicz, H.Schaffner, S.Tashenov, and H.J.WollersheimGSI, GermanyG.Jaworski, M.PalaczWarsaw University, PolandC.HinkeTUM, GermanyG.IlieUniversity of Cologne, GermanyE.CasarejosUniversity of Vigo, SpainS.Myalski, Polish Academy of Science, PolandF.R.Xu, Y.ShiPeking University, China