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作 者:Wei Zhang Wan-Li Lv Ting-Ting Sun 张炜;吕万里;孙亭亭(School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China;School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China)
机构地区:[1]School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China [2]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China
出 处:《Chinese Physics C》2021年第2期479-486,共8页中国物理C(英文版)
基 金:Supported by Naturnal Science Foundation of Henan Province(202300410480,202300410479);the National Natural Science Foundation of China(U2032141);the Foundation of Fundamental Research for Young Teachers of Zhengzhou University(UC 202041041);the Physics Research and Development Program of Zheng-zhou University(324102171)。
摘 要:The temperature dependence of the shell corrections to the energy sEsell,entropy T8S sell,and free en-ergy oFshell 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),8Eshell exhibits a non-monotonous behavior,ie.,first decreasing 20%approaching a temperature of 0.8 MeV,and then fading away exponentially.Shell corrections to both free energy 8F shell and entropy T8S shell can be approximated well using the Bohr-Mottelson forms T/sinh(t)and[rcoth(r)-1]/sinh(r),respectively,in which Tx T.Further studies on the shell corrections in other closed-shell nuclei,100Sn and 208 Pb,are conducted,and the same temperature dependen-cics are obtained.
关 键 词:finite temperature shell correction nuclear energy density functionals
分 类 号:O571[理学—粒子物理与原子核物理]
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