Improved measurement of the 02+→01+ E0 transition strength for Se 72 using the SPICE spectrometer
- Smallcombe, J.
- Garnsworthy, A. B.
- Korten, W.
- Singh, P.
- Ali, F. A.
- Andreoiu, C.
- Ansari, S.
- Ball, G. C.
- Barton, C. J.
- Bhattacharjee, S. S.
- Bowry, M.
- Caballero-Folch, R.
- Chester, A.
- Gillespie, S. A.
- Grinyer, G. F.
- Hackman, G.
- Jones, C.
- Melon, B.
- Moukaddam, M.
- Nannini, A.
- Ruotsalainen, P.
- Starosta, K.
- Svensson, C. E.
- Wadsworth, R.
- Williams, J.
DOIAbstract
The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of Se72 by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 02+ state were performed, yielding a determination of ρ2(E0;02+→01+)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence
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