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Test of the πg7/2 subshell closure at Z=58

机译: π g的测试 7 / 2 Z = 上的math>子外壳程序关闭 58

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摘要

A simultaneous lifetime and relative g -factor measurement of the levels in 138,142 Ce was performed using the Time Dependent Recoil Into Vacuum (TDRIV) technique. The excitation mechanism was Coulomb excitation in inverse kinematics, and the experimental setup included the Yale plunger device and the Gammasphere array. The latter was used to extract angular distributions for the γ -ray transitions at various target-to-stopper distances. A factor of 0.26(8) for 138 Ce was obtained relative to the literature value of in 142 Ce. In addition, high-precision values of the strengths were obtained. The new data support a proposed subshell closure for the orbital at .
机译:使用时间相关的反冲真空度(TDRIV)技术,同时进行了寿命和138,142 Ce中的相对g因子测量。激发机理是逆运动学中的库仑激发,实验装置包括耶鲁柱塞装置和伽玛球阵列。后者用于提取在各种目标到塞子距离的γ射线跃迁的角度分布。相对于142 Ce中的文献值,获得了138 Ce的系数0.26(8)。另外,获得了强度的高精度值。新数据支持对的轨道建议的子壳闭合。

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