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Smallcombe, J.; Garnsworthy, A. B.*; Korten, W.*; Singh, P.*
no journal, ,
The phenomenon of shape coexistence is prevalent in the Z~34 region, with isotopes of neutron-deficient even Ge, Se and Kr each exhibiting the characteristic low-lying coexisting 0 bands which display quadrupole deformation different to that of the ground states. In the selenium isotopes,
Se seem to show a prolate ground structure with shape coexisting oblate excitation, while in
Se the oblate structure appears to have become the ground state. The exact nature of the low-lying structure
Se and any shape coexistence remains uncertain. Combining the Spectrometer for Internal Conversion Electrons (SPICE) with the TIGRESS HPGe Array, a full electron and gamma-ray experimental study of
Se was undertaken at the TRIUMF ISAC-II facility to unveil the low-lying structure of these nuclei. Details of the device and experiment will be presented, alongside the experimental results and possible structural interpretations for both isotopes.