Phase transition in odd-N Pd-isotopes
Phase transition in odd-N Pd-isotopes
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奇数 N 钯同位素的相变
DOI：
10.1088/1674-1137/39/11/114103
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发表时间：
2015
影响因子：
3.6
通讯作者：
许甫荣
中科院分区：
文献类型：
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作者：
周厚兵;董国香;孙小军;许甫荣
利用E-GOS（E-Gamma Over Spin）曲线研究了奇氮同位素99、101、103 Pd的相变，发现随着自旋的增加，原子结构沿自旋线沿着由振动向转动演化.在曲柄壳模型（CSM）框架下对99，101，103 Pd的基态能带进行了理论计算，并利用该模型分析了实验观测到的取向性质。结果表明，99，101，103 Pd基态带的相变可以解释为随着自旋的增加，价核子开始占据g9/2质子轨道，这将使核产生一个小的但刚性的四极形变.
Phase transition in odd-N isotopes 99,101,103Pd are investigated via the E-GOS (E-Gamma Over Spin) curves, which strongly suggest a structure evolution from vibration to rotation along the yrast lines with increasing spin. Theoretical calculations have been performed for the ground state bands of 99,101,103Pd in the framework of the cranked shell model (CSM) and the alignment properties observed experimentally are analyzed employing this model. The results show that the phase transition in the ground state bands of 99,101,103Pd can be interpreted as the valence nucleons start to occupy the g9/2 proton orbitals with increasing spin which would polarize the core to a small, but rigid quadrupole deformation.