Evolution of deformations in medium-mass nuclei
Evolution of deformations in medium-mass nuclei
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DOI：
10.1103/physrevc.72.054311
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发表时间：
2005-10
影响因子：
3.1
通讯作者：
H. Sagawa;X. Zhou;X. Zhang
中科院分区：
文献类型：
--
作者：
H. Sagawa;X. Zhou;X. Zhang
用形变SkyrmeHartree-Fock模型研究了质量A=18~56$的sd壳层和pf壳层核的四极形变演化.我们指出，同位旋T=0和T=1的核的四极形变表现出强烈的质量数依赖性，这是核多体系统形变动力学演化的一个明显表现。本文系统地研究了在$T= 0.001 ~ 0.001的核中质子和中子形变之间的比值，表明了驱动粒子振动耦合的形变与闭壳层结构之间的竞争|{T}_{z}|=1美元。计算的四极和十六极变形与壳模型的结果和现有的实验数据进行了比较。还讨论了蒙皮厚度与固有${Q}_{2}$矩之间的关系。
Evolution of quadrupole deformations in sd- and pf-shell nuclei with mass $A=18~56$ is studied by using deformed Skyrme Hartree-Fock model with pairing correlations. We point out that the quadrupole deformations of the nuclei with the isospin $T=0$ and $T=1$ show strong mass number dependence as a clear manifestation of dynamical evolution of deformation in nuclear many-body systems. The competition between the deformation driving particle-vibration coupling and the closed-shell structure is shown in a systematic study of the ratios between the proton and neutron deformations in nuclei with $T=|{T}_{z}|=1$. Calculated quadrupole and hexadecapole deformations are compared with shell model results and available experimental data. A relation between the skin thickness and the intrinsic ${Q}_{2}$ moments is also discussed.