Shell corrections with finite temperature covariant density functional theory

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: NUCLEAR PHYSICS
• 页码范围: 479-486
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1137/abce12

摘要

The temperature dependence of the shell corrections to the energy 6Eshell,entropy TδS shell,and free en-ergy δFshell is studied by employing the covariant density functional theory for closed-shell nuclei.Taking 144Sm as an example,studies have shown that,unlike the widely-used exponential dependence exp(-E'/Ed),δEshell exhibits a non-monotonous behavior,i.e.,first decreasing 20％approaching a temperature of 0.8 MeV,and then fading away exponentially.Shell corrections to both free energy 6Fshei and entropy TδS shell can be approximated well using the Bohr-Mottelson forms r/sinh(r)and[rcoth(r)-l]/sinh(T),respectively,in which tocT.Further studies on the shell corrections in other closed-shell nuclei,100Sn and 208Pb,are conducted,and the same temperature dependen-cies are obtained.