~(93)Pd的β缓发质子衰变

通过58 Ni(40 Ca ,3n2p)反应合成等待点核93 Pd ,采用氦喷嘴带传输系统加p γ符合 ,观测到了它的 β缓发质子衰变 ,测得其半衰期为 (1.3± 0 .2 )s .采用统计模型计算拟合了实验测得的 β缓发质子能谱和布居到质子发射体子核不同终态的分支比 ,指认了93 Pd的基态自旋为 9 2 .用Woods XasonStrutinsky方法计算了93 Pd的核位能面 ,其结果表明93 Pd基态自旋宇称可能为 9 2 + .

Structure evolution along the yrast-line in Pd-101

High-spin states in Pd-101 have been investigated experimentally via the Ge-76(Si-28, 3n gamma)Pd-101 reaction. The previously known bands based on the d(5/2) and h(11/2) neutron orbitals have been extended to higher-spin states, and two new structures have been observed. Spin and parity were assigned to the levels on the basis of the experimental results of the angular distribution of gamma rays deexciting the oriented states. For the ground-state band, the E-GOS (E-Gamma Over Spin) curve strongly suggests a structure transition from vibration to rotation while increasing spin.