Improved macroscopic microscopic mass formula  

作　　者：Tian-Liang Zhao Xiao-Jun Bao Hong-Fei Zhang 赵天亮;包小军;张鸿飞(School of Nuclear Science and Technology,Lanzhou University,730000 Lanzhou,China;Department of Physics,Collaborative Innovation Center for Quantum Effects,and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University,Changsha 410081,China)

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,730000 Lanzhou,China [2]Department of Physics,Collaborative Innovation Center for Quantum Effects,and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University,Changsha 410081,China

出　　处：《Chinese Physics C》2021年第7期247-253,共7页中国物理C（英文版）

摘　　要：A nuclear mass formula based on the macroscopic microscopic approach is proposed,in which the number of model parameters is reduced compared with other macroscopic microscopic models.The root mean square(RMS)deviation with respect to 2314 training sets(measured nuclear masses)is reduced to 0.447 MeV,and the calculated value of each nucleus is no more than 0.8%different from the experimental value.The single and two nucleon separation energies and the shell gaps are calculated to test the model.The shell corrections and double magic number of superheavy nuclei are also analyzed.

关 键 词：macroscopic microscopic mass formula shell gap nucleon separation energy fission barrier single-particle energy level 

分 类 号：O571[理学—粒子物理与原子核物理]