【摘 要】
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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 den
【机 构】
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School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China;School of Nucl
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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.
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