Phys.Rev. C 106, 014312 (2022)

J.Smallcombe, A.B.Garnsworthy, W.Korten, P.Singh, F.A.Ali, C.Andreoiu, S.Ansari, G.C.Ball, C.J.Barton, S.S.Bhattacharjee, M.Bowry, R.Caballero-Folch, A.Chester, S.A.Gillespie, G.F.Grinyer, G.Hackman, C.Jones, B.Melon, M.Moukaddam, A.Nannini, P.Ruotsalainen, K.Starosta, C.E.Svensson, R.Wadsworth, J.Williams

Improved measurement of the 0₂⁺ → 0₁⁺ E0 transition strength for ⁷²Se using the SPICE spectrometer

NUCLEAR REACTIONS ⁴⁰Ca(³⁶Ar, 4p), E=120 MeV from TRIUMF-ISAC-II linear accelerator; measured reaction products, Eγ, Iγ, ce, γγ-coin, (ce)γ-coin, and (ce)γ(t) using TIGRESS array of 12 HPGe clover detectors for γ detection, and SPICE array and a Si(Li) detector for conversion electrons. ⁷²Se; deduced levels, T_1/2 of 937, 0+ level, I(937, E0)/I(γ+ce)(75γ, E2) ratio, q_K²(E0/E2) and ρ²(E0, 937) transition strength. Comparison with previous experimental results, and with two state mixing theoretical calculations for the g.s. and the first 2+ state. Systematics of experimental B(E2) and ρ²(E0) strengths in ^{66,68,70,72,74}Ge, ^{68,70,72,74,76}Se, ^{70,72,74,76,78}Kr.

doi: 10.1103/PhysRevC.106.014312