Dinner: Days Chinese BuffetAll you can eat £11.99
19:30
Brighton_PRESPEC_Jan_2011
Brighton_PRESPEC_Jan_2011
Brighton_PRESPEC_Jan_2011
Deformation and shape changes around 106Zr
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
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
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
5/2[422],7/2[523]
Brighton_PRESPEC_Jan_2011
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
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
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
Next plans:
Brighton_PRESPEC_Jan_2011
-gamma-gamma coincidences to get lifetimes
=> matrix elements.
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
Top Related