Effect of pairing correlation on the low-lying quadrupole states in sn isotopes
Effect of pairing correlation on the low-lying quadrupole states in sn isotopes
复制标题
配对关联对锡同位素低位四极态的影响
DOI：
10.1088/1674-1137/ac0b39
复制
发表时间：
2021-06
影响因子：
3.6
通讯作者：
Zhang Shisheng
中科院分区：
文献类型：
--
作者：
Cao Ligang;Sun Shuai;Zhang Zhenhua;Zhang Shisheng
我们在完全自洽的Hartree-Fock+BCS + QRPA框架下研究了Sn同位素的低四极子态。我们着重研究了对相互作用的密度依赖性对低四极态性质的影响。SLy 5 Skyrme相互作用与表面，混合，和体积配对中的计算，分别采用。我们发现，第一个2+态的激发能和相应的约化电跃迁几率是不同的，由三个配对相互作用给出。详细分析了112 Sn的准粒子态、双准粒子激发能、约化跃迁振幅和跃迁密度的性质。本文还讨论了对关联的两种不同机制，即静态效应和动力学效应。结果表明，表面，混合和体积配对确实影响的第一个2+态的Sn同位素的性质。
We examined the low-lying quadrupole states in Sn isotopes in the framework of fully self-consistent Hartree-Fock+BCS plus QRPA. We focus on the effect of the density-dependence of pairing interaction on the properties of the low-lying quadrupole state. The SLy5 Skyrme interaction with surface, mixed, and volume pairings is employed in the calculations, respectively. We find that the excitation energies and the corresponding reduced electric transition probabilities of the first 2+ state are different, given by the three pairing interactions. The properties of the quasiparticle state, two-quasiparticle excitation energy, reduced transition amplitude, and transition densities in 112Sn are analyzed in detail. Two different mechanisms, the static and dynamical effects, of the pairing correlation are also discussed. The results show that the surface, mixed, and volume pairings indeed affect the properties of the first 2+ state in the Sn isotopes.