- Conference date: 10-15 Aug 1998
- Location: Gatlinburg, Tennesse (USA)
The yrast sequence in has been studied for the first time in recoil-mass and decay tagged γ-ray spectroscopic measurements. A rotational-like cascade of seven transitions is observed down to the bandhead with spin In contrast to adjacent nuclei, links from the yrast band to a lower lying weakly deformed (oblate) structure are not observed. It appears that the prolate energy minimum in drops significantly compared to and minimizes below the neutron midshell Possibilities for the decay out of the band in are discussed.
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