论文标题
\ element {236,238} {u}和\ element {238,240} {pu}的交替频段{u}和\ element {238,240} {pu}在基于曲柄壳模型的粒子数保存方法中
The alternating-parity bands of \element{236,238}{U} and \element{238,240}{Pu} in a particle-number conserving method based on cranked shell model
论文作者
论文摘要
开发了曲柄壳模型（CSM）中的粒子数（PNC）方法，以通过应用$ s_x $对称性来处理反射 - 空气对称核系统。基于Octupole成型的Nilsson电位，研究了\ element {236,238} {U}和\ Element {238,240} {PU}中的交替频段。在PNC-CSM计算中，惯性（MOI）（MOI）的实验运动矩和所有研究频段的角动量比对。 U和PU同位素之间旋转行为的显着差异可以与八杆相关性的强度有关。 \ element {236,238} {u}中交替的频段的上下弯曲是由于占$ $νg_{9/2} $，$πf_{7/2} $ orbitals和$νj_$ n Inter $ nint $ n Inter的一对核子对齐$νg_{9/2} $ {7/2}轨道。尤其是，将核子的干扰术语占据了$ν^2 j_ {15/2} g_ {9/2} $和$π^2 i_ {13/2} f_ {7/2} $的八杆相互关系对，给突然获得的贡献非常重要。
The particle-number conserving (PNC) method in the framework of cranked shell model (CSM) is developed to deal with the reflection-asymmetric nuclear system by applying the $S_x$ symmetry. Based on an octupole-deformed Nilsson potential, the alternating-parity bands in \element{236,238}{U} and \element{238,240}{Pu} are investigated. The experimental kinematic moments of inertia (MoI) and the angular momentum alignments of all studied bands are reproduced well in the PNC-CSM calculations. The striking difference of rotational behaviors between U and Pu isotopes can be linked to the strength of octupole correlations. The upbendings of the alternating-parity bands in\element{236,238}{U} are due to the alignments of pairs of nucleons occupying $νg_{9/2}$, $πf_{7/2}$ orbitals and $νj_{15/2}$, $πi_{13/2}$ high-$j$ intruder orbitals. Particularly, the interference terms of nucleon occupying the octupole-correlation pairs of $ν^2 j_{15/2} g_{9/2}$ and of $π^2 i_{13/2} f_{7/2}$ give a very important contribution to the suddenly gained alignments.
