SD配对壳模型对质量数A～130区原子核的形状渡越研究（英文）  

Nuclear Shape Phase Crossover in A～130 Mass Region in the SD-pair Shell Model

作　　者：丁小雪[1] 罗延安[2] 何秉承 潘峰[1,3] 张宇 李博[4] J.P.Draayer DING Xiaoxue;LUO Yanan;HE Bingcheng;PAN Feng;ZHANG Yu;LI Bo;J.P.Draayer(Department of Physics,Liaoning Normal University,Dalian 116029,Liaoning,China;School of Physics,Nankai University,Tianjin 300071,China;Department of Physics and Astronomy,Louisiana State University,Baton Rouge,Louisiana 70803-4001,USA;Department of Physics,Anshan Normal University,Anshan 114007,Liaoning,China)

机构地区：[1]辽宁师范大学物理系,辽宁大连116029 [2]南开大学物理科学学院,天津300071 [3]美国路易斯安娜州立大学物理与天文系,la70803 [4]鞍山师范学院物理科学与技术学院,辽宁鞍山114007

出　　处：《原子核物理评论》2018年第4期511-517,共7页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(11675071,11747318,11475091,11875171);U.S.National Science Foundation(OIA-1738287,ACI-1713690);U.S.Department of Energy(DE-SC0005248);China-U.S.Theory Institute for Physics with Exotic Nuclei(CUSTIPEN)(DE-SC0009971);LSU–LNNU Joint Research Program(9961);Research Start-up Fund of Anshan Normal University(2018b03)~~

摘　　要：利用SD配对壳模型研究了质量数A～130区原子核的低激发态性质。为了减少参数,模型采用了等强度对力,取质子和中子对力强度等同近似,而非同类核子间的四极-四极相互作用强度取为同类核子间四极-四极相互作用强度的两倍。计算结果显示,模型的振动-转动和振动-γ不稳定运动的形状渡越特征与相互作用玻色子模型对应的形状相变特征基本吻合,从而说明SD配对壳模型是壳模型的一种合理近似。The SD-pair shell model is applied to analyze the evolution of low-lying states of even-even nuclei in A ~ 130 mass region. In the model, the pairing and the quadrupole-quadrupole interactions are taken into account. The results show that there are clear signatures of the crossover from vibrational to rotational or from vibrational to the γ-soft shape phase.

关 键 词：SD配对壳模型 形状渡越 能级比 电磁跃迁 

分 类 号：O571.6[理学—粒子物理与原子核物理]