Microscopic study of tetrahedrally symmetric nuclei by an angular-momentum and parity projection method
Microscopic study of tetrahedrally symmetric nuclei by an angular-momentum and parity projection method
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DOI：
10.1103/physrevc.87.054306
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发表时间：
2013-01
影响因子：
3.1
通讯作者：
S. Tagami;Y. Shimizu;J. Dudek
中科院分区：
文献类型：
--
作者：
S. Tagami;Y. Shimizu;J. Dudek
我们采用微观平均场和剩余相互作用哈密顿量以及角动量和宇称投影方法研究了假设四面体对称性的核旋转激发的性质；我们关注具有四面体双闭壳构型的变形核。我们发现，对于纯四面体变形，所获得的激励模式满足应用于四面体对称群的群表示理论所预测的特征。我们发现，从近似线性到特征刚性转子、抛物线能量与自旋依赖性的逐渐转变作为四面体变形参数的函数发生。该转变的形式与四极变形情况下类似的众所周知的转变进行了比较。
We study the properties of the nuclear rotational excitations with hypothetical tetrahedral symmetry by employing the microscopic mean-field and residual-interaction Hamiltonians with angular-momentum and parity projection method; we focus on the deformed nuclei with tetrahedral doubly-closed shell configurations. We find that for pure tetrahedral deformation the obtained excitation patterns satisfy the characteristic features predicted by group-representation theory applied to the tetrahedral symmetry group. We find that a gradual transition from the approximately linear to the characteristic rigid-rotor, parabolic energy-vs.-spin dependence occurs as a function of the tetrahedral deformation parameter. The form of this transition is compared with the similar well-known transition in the case of quadrupole deformation.