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题名: Cluster approach to the structure of Pu-240
作者: Shneidman, TM;  Adamian, GG;  Antonenko, NV;  Jolos, RV;  Zhou, SG
刊名: PHYSICAL REVIEW C
出版日期: 2015
卷号: 92, 期号:3, 页码:34302
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.92.034302
通讯作者: Shneidman, TM (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: The cluster approach, which allows us to take into account both shape deformation parameters and cluster degrees of freedom, is developed to describe alternating-parity rotational bands. The important ingredient of the model is the dinuclear system concept in which the wave function of the nucleus is treated as a superposition of a mononucleus and two-cluster configurations. The model is applied to describe the multiple positive and negative parity rotational bands in Pu-240. The observed excitation spectrum and the angular momentum dependences of the parity splitting and of the electric E1 and E2 transition moments are explained. Special emphasis is made on the investigation of the recently measured positive parity 0(2)(+) rotational band of reflection-asymmetric nature. The results suggest that this band might be understood as being built on the lowest excited state in the mass asymmetry degree of freedom. The B(E1)/B(E2) branching ratios between the reduced transition probabilities of decay from the states of the 0(2)(+) band to the first negative parity band and to the groundstate band, respectively, are calculated and compared with experimental data.
类目[WOS]: Physics, Nuclear
关键词[WOS]: NUCLEAR GROUND-STATE ;  EVEN-EVEN NUCLEI ;  HEAVY-NUCLEI ;  OCTUPOLE CORRELATIONS ;  REFLECTION ASYMMETRY ;  DINUCLEAR SYSTEM ;  ACTINIDE NUCLEI ;  MODEL ;  DEFORMATIONS ;  ISOTOPES
收录类别: SCI
项目资助者: RFBR (Russian Federation) ;  NSFC (Beijing) ;  CAS Fellowship [2013Y1JA0003] ;  Russian Government Subsidy Program of the Competitive Growth of Kazan Federal University ;  973 Program of China [2013CB834400] ;  NSF of China [11121403, 11120101005, 11275248] ;  Chinese Academy of Sciences [KJCX2-EW-N01]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20870
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Shneidman, TM,Adamian, GG,Antonenko, NV,et al. Cluster approach to the structure of Pu-240[J]. PHYSICAL REVIEW C,2015,92(3):34302.
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