Soft giant dipole modes in Ca isotopes in the relativistic RPA

	Soft giant dipole modes in Ca isotopes in the relativistic RPA
	Cao, LG ; Chen, BQ ; Ma, ZY
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2001-08-15
卷号	36 页码:178-182
关键词	relativistic random phase approximation isovector giant dipole resonance chain of Ca isotopes
ISSN号	0253-6102
英文摘要	The isovector giant dipole resonance in Ca isotopes is investigated in the framework of the fully consistent relativistic random phase approximation. The calculations are performed in an effective Lagrangian with a parameter set NL3, which was proposed for satisfactorily describing nuclear ground state properties. It is found that a soft isovector dipole mode for Ca isotopes near drip lines exists at energy around 6 similar to 7 MeV. The soft dipole states are mainly due to the excitation of the weakly bound and pure neutron (proton) states near Fermi surface as well as the correlation of isoscalar and isovector operators. For nuclei with the extreme value of N/Z, the contributions of isoscalar mesons in the isovector mode play a non-negligible role.
WOS关键词	RANDOM-PHASE-APPROXIMATION ; NEUTRON-RICH NUCLEI ; FINITE NUCLEI ; RESONANCES
WOS研究方向	Physics
语种	英语
出版者	INT ACADEMIC PUBL
WOS记录号	WOS:000171143200012
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56967]
专题	中国科学院近代物理研究所
通讯作者	Cao, LG
作者单位	1.China Inst Atom Energy, Beijing 102413, Peoples R China 2.Natl Lab Heavy Ion Accelerator, Ctr Nucl Theoret Phys, Lanzhou 730000, Peoples R China 3.Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Cao, LG,Chen, BQ,Ma, ZY. Soft giant dipole modes in Ca isotopes in the relativistic RPA[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2001,36:178-182.
APA	Cao, LG,Chen, BQ,&Ma, ZY.(2001).Soft giant dipole modes in Ca isotopes in the relativistic RPA.COMMUNICATIONS IN THEORETICAL PHYSICS,36,178-182.
MLA	Cao, LG,et al."Soft giant dipole modes in Ca isotopes in the relativistic RPA".COMMUNICATIONS IN THEORETICAL PHYSICS 36(2001):178-182.