Nonaxial-octupole Y-32 correlations in N=150 isotones from multidimensional constrained covariant density functional theories
Nonaxial-octupole Y-32 correlations in N=150 isotones from multidimensional constrained covariant density functional theories
复制标题
来自多维约束协变密度泛函理论的 N=150 个同位素中的非轴八极 Y-32 相关性
DOI：
10.1103/physrevc.86.057304
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发表时间：
2012-09
影响因子：
3.1
通讯作者：
Zhou, Shan-Gui
中科院分区：
文献类型：
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作者：
Zhao, Jie;Lu, Bing-Nan;Zhao, En-Guang;Zhou, Shan-Gui
用多维约束协变密度泛函理论研究了N=150的几个转移原子核，即Cm-246、Cf-248、Fm-250和No-252的非轴反射非对称β(32)晶型。用密度相关的点耦合协变密度泛函理论和粒子-空穴通道中的参数集DD-PC1，发现对于CF-248和FM-250的基态，非轴八极形变参数β(32)>；0.03和由于β(32)形变产生的能量增益大于300keV。在Cm-246和No-252中发现了浅的β(32)极小值。非轴八极β(32)关联的产生主要来自靠近中子费米面的一对中子轨道[734]9/2(nuj(15/2))和[622]5/2(nug(9/2))，以及靠近质子费米面的一对质子轨道[521]3/2(pi f(7/2))和[633]7/2(pi i(13/2))。研究了非轴八极效应对能量密度泛函形式和参数集的依赖关系。
The nonaxial reflection-asymmetric beta(32) shape in some transfermium nuclei with N = 150, namely, Cm-246, Cf-248, Fm-250, and No-252, are investigated with multidimensional constrained covariant density functional theories. By using the density-dependent point-coupling covariant density functional theory with the parameter set DD-PC1 in the particle-hole channel, it is found that, for the ground states of Cf-248 and Fm-250, the nonaxial octupole deformation parameter beta(32) > 0.03 and the energy gain due to the beta(32) distortion is larger than 300 keV. In Cm-246 and No-252, shallow beta(32) minima are found. The occurrence of the nonaxial octupole beta(32) correlations is mainly from a pair of neutron orbitals, [734]9/2 (nu j(15/2)) and [622]5/2 (nu g(9/2)), which are close to the neutron Fermi surface, and a pair of proton orbitals, [521]3/2 (pi f(7/2)) and [633]7/2 (pi i(13/2)), which are close to the proton Fermi surface. The dependence of the nonaxial octupole effects on the form of the energy density functional and on the parameter set is also studied.
DOI：
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发表时间：
2012-08
期刊：
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影响因子：
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作者：
Zhen-Hua Zhang;J. Meng;E. Zhao;Shan-Gui Zhou
通讯作者：
Zhen-Hua Zhang;J. Meng;E. Zhao;Shan-Gui Zhou