Origin of symmetry energy in finite nuclei and density dependence of nuclear matter symmetry energy from measured alpha-decay energies

doi:10.1103/PhysRevC.87.014303

	Origin of symmetry energy in finite nuclei and density dependence of nuclear matter symmetry energy from measured alpha-decay energies
	Dong, Jianmin 1; Zuo, Wei1 ; Gu, Jianzhong 2
刊名	PHYSICAL REVIEW C
	2013-01-07
卷号	87
ISSN号	0556-2813
DOI	10.1103/PhysRevC.87.014303
文献子类	Article
英文摘要	Based on the Skyrme energy density functional, the spatial distribution of the symmetry energy of a finite nucleus is derived in order to examine whether the symmetry energy of a finite nucleus originates from its interior or from its surface. It is found that the surface part of a heavy nucleus contributes dominantly to its symmetry energy compared to its inner part. The symmetry energy coefficient a(sym)(A) is then directly extracted and the ratio of the surface symmetry coefficient to the volume symmetry coefficient kappa is estimated. Meanwhile, with the help of experimental alpha-decay energies, a macroscopic method is developed to determine the symmetry energy coefficient of heavy nuclei. The resultant a(sym)(A) is used to analyze the density dependence of the symmetry energy coefficient of nuclear matter around the saturation density, and furthermore, the neutron skin thickness of Pb-208 is deduced which is consistent with the pygmy dipole resonance analysis. In addition, it is shown that the ratio kappa obtained from the macroscopic method is in agreement with that from the Skyrme energy density functional. Thus the two completely different approaches may validate each other to achieve more compelling results. DOI: 10.1103/PhysRevC.87.014303
资助项目	Funds for Creative Research Groups of China[11021504]
WOS关键词	FOCK-BOGOLYUBOV EQUATIONS ; NEUTRON-STAR ; ISOSPIN ASYMMETRY ; PHYSICS ; RADII
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000313159400002
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/48421]
专题	中国科学院近代物理研究所
通讯作者	Dong, Jianmin
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Dong, Jianmin,Zuo, Wei,Gu, Jianzhong. Origin of symmetry energy in finite nuclei and density dependence of nuclear matter symmetry energy from measured alpha-decay energies[J]. PHYSICAL REVIEW C,2013,87.
APA	Dong, Jianmin,Zuo, Wei,&Gu, Jianzhong.(2013).Origin of symmetry energy in finite nuclei and density dependence of nuclear matter symmetry energy from measured alpha-decay energies.PHYSICAL REVIEW C,87.
MLA	Dong, Jianmin,et al."Origin of symmetry energy in finite nuclei and density dependence of nuclear matter symmetry energy from measured alpha-decay energies".PHYSICAL REVIEW C 87(2013).