Shell evolution in neutron-rich carbon isotopes: Unexpected enhanced role of neutron-neutron correlation

doi:10.1016/j.nuclphysa.2012.04.003

	Shell evolution in neutron-rich carbon isotopes: Unexpected enhanced role of neutron-neutron correlation
	Yuan, C. X.1; Qi, C.1,2; Xu, F. R.1,3
刊名	NUCLEAR PHYSICS A
	2012-06-01
卷号	883 页码:25-34
关键词	Shell Model Shell Evolution N=14 Shell Carbon Isotopes
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2012.04.003
文献子类	Article
英文摘要	Full shell-model diagonalization has been performed to study the structure of neutron-rich nuclei around C-20. We investigate in detail the roles played by the different monopole components of the effective interaction in the evolution of the N = 14 shell in C, N and O isotopes. It is found that the relevant neutron neutron monopole terms, V-d5/2d5/2(nn) and V-s1/2s1/2(nn) contribute significantly to the reduction of the N = 14 shell gap in C and N isotopes in comparison with that in O isotopes. The origin of this unexpectedly large effect, which is comparable with (sometimes even larger than) that caused by the proton neutron interaction, is related to the enhanced configuration mixing in those nuclei due to many-body correlations. Such a scheme is also supported by the large B(E2) value in the nucleus C-20 which has been measured recently. (C) 2012 Elsevier B.V. All rights reserved.
资助项目	Swedish Research Council (VR)[623-2009-7340] ; Swedish Research Council (VR)[621-2010-4723]
WOS关键词	MODEL ; NUCLEI ; TRANSITIONS ; STABILITY ; STATES
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000304628900002
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49057]
专题	中国科学院近代物理研究所
通讯作者	Xu, F. R.
作者单位	1.Peking Univ, State Key Lab Nucl Phys & Technol, Sch Phys, Beijing 100871, Peoples R China 2.AlbaNova Univ Ctr, KTH Royal Inst Technol, SE-10691 Stockholm, Sweden 3.Natl Lab Heavy Ion Phys, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yuan, C. X.,Qi, C.,Xu, F. R.. Shell evolution in neutron-rich carbon isotopes: Unexpected enhanced role of neutron-neutron correlation[J]. NUCLEAR PHYSICS A,2012,883:25-34.
APA	Yuan, C. X.,Qi, C.,&Xu, F. R..(2012).Shell evolution in neutron-rich carbon isotopes: Unexpected enhanced role of neutron-neutron correlation.NUCLEAR PHYSICS A,883,25-34.
MLA	Yuan, C. X.,et al."Shell evolution in neutron-rich carbon isotopes: Unexpected enhanced role of neutron-neutron correlation".NUCLEAR PHYSICS A 883(2012):25-34.