Improved descriptions of collective and non-collective rotations in the superheavy nucleus ^(256)Rf  

作　　者：Hongliang Liu Furong Xu 

机构地区：[1]Department of Applied Physics, School of Science, Xi’an Jiaotong University [2]State Key Laboratory of Nuclear Physics and Technology,School of Physics, Peking University

出　　处：《Chinese Science Bulletin》2014年第1期11-15,共5页

基　　金：supported by the National Natural Science Foundation of China(11205120,11235001);the National Key Basic Research Program of China(2013CB834400)

摘　　要：The superheavy nucleus256Rf,where rotational band and multi-quasiparticle isomer have been observed recently,has been investigated using total Routhian surface calculations and configuration-constrained calculations of potential energy surface,with the inclusion of b6deformation.The experimental moment of inertial is well reproduced,indicating that the alignment is delayed due to the b6deformation.A K p=5-or 8-state could form a two-quasiparticle isomer that is calculated to have higher fission barrier than the ground state.The superheavy nucleus 2S6Rf, where rotational band and multi-quasiparticle isomer have been observed recently, has been investigated using total Routhian surface calculations and configuration-constrained calculations of potential energy surface, with the inclusion of β6 defor- mation. The experimental moment of inertial is well reproduced, indicating that the alignment is delayed due to the β6 deformation. A K^π = 5- or 8- state could form a two-quasiparticle isomer that is calculated to have higher fission barrier than the ground state.

关 键 词：超重核 集体 异构体 准粒子 转动带 计算 势能面 位能面 

分 类 号：O571[理学—粒子物理与原子核物理]