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原子核質(zhì)量表更新：new nuclear mass table(21)Skyrme能量密度泛函在核基態(tài)性質(zhì)的研究以及熔合反應中的應用(38)
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The obtained nuclear mass tables with a modified mass formula. In addition, the corresponding mass data from FRDM, HFB-14 and HFB-17 are also provided for comparison.
This semi-empirical nuclear mass formula is based on the macroscopic-microscopic method in which the isospin and mass dependence of model parameters are investigated with the Skyrme energy density functional. The number of model parameters is considerably reduced compared with the finite range droplet model. The rms deviation with respect to 2149 measured nuclear masses is reduced by 21%, falls to 0.516 MeV. The rms deviation of 1988 measured neutron separation energy is reduced to 0.346 MeV.
基于一個(gè)改進(jìn)的原子核質(zhì)量公式得到的原子核質(zhì)量表。
該質(zhì)量公式結合Skyrme能量密度泛函以及宏觀(guān)-微觀(guān)方法，對宏觀(guān)-微觀(guān)方法中模型參數的同位旋依賴(lài)以及宏觀(guān)微觀(guān)兩部分參數之間的自洽性進(jìn)行了仔細考慮，從而使得模型參數的數目大大減少，和FRDM模型相比較，參數減少了一半，而對2149個(gè)核質(zhì)量的rms偏差減小了21%，達到0.516MeV；運算速度也大大提高。同時(shí)，該模型能夠很好地再現較輕的豐中子核的N=16新幻數以及原子核的形狀共存現象。根據該模型，預言出來(lái)的超重島比較平坦，沿中子數N=178質(zhì)子數Z=114出現稍微深一點(diǎn)的殼修正低谷，這個(gè)區域的原子核的殼修正能大約為負 6 MeV。
該模型更詳細的介紹請參看Phys. Rev. C 81 (2010) 044322； eprint；
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