Observation of a prolate-to-oblate shape change near spin 40h in /sup 158/Er
作者： J. Simpson , M. A. Riley , J. R. Cresswell , P. D. Forsyth , D. Howe
DOI: 10.1103/PHYSREVLETT.53.648
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摘要: Discrete $\ensuremath{\gamma}$-ray transitions have been observed above spin 40 in $^{158}\mathrm{Er}$ following the $^{114}\mathrm{Cd}(^{48}\mathrm{Ca},4n)$ reaction. Structure characteristic of collective rotation a prolate nucleu\ifmmode \acute{s}\else \'{s}\fi{} ends at ${I}^{\ensuremath{\pi}}={38}^{+}$ yrast band and probably ${41}^{\ensuremath{-}}$ lowest-energy negative-parity corresponding both cases to rotational energy \ensuremath{\sim} 0.53 MeV. It is suggested that phase transition prolate-to-oblate shape change which predicted occur higher spin.
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