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题名: Fusion barrier of super-heavy elements in a generalized liquid drop model
作者: Chen, BQ ;  Ma, ZY
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2004
卷号: 42, 期号:4, 页码:594-598
关键词: NUCLEI
学科分类: Physics
通讯作者: Chen, BQ , Inst Atom Energy, Beijing 102413, Peoples R China.
部门归属: Inst Atom Energy, Beijing 102413, Peoples R China; Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The macroscopic deformed potential energies for super-heavy elements Z = 110, 112, 114, 116, 118 are determined within a generalized liquid drop model (GLDM). A quasi-molecular mechanism is introduced to describe the deformation of a nucleus in the GLDM and the shell model simultaneously. The macroscopic energy of a two-center nuclear system in the GLDM includes the volume-, surface-, and Coulomb-energies, the proximity effect at each mass asymmetry, and accurate nuclear radius. The shell correction is calculated by the Strutinsky method and the microscopic single particle energies are derived from a shell model in an axially deformed Woods-Saxon potential with the quasi-molecular shape. The total potential energy of a nucleus can be calculated by the macro-microscopic method as the summation of the liquid-drop energy and the Strutinsky shell correction. The theory is applied to predict the fusion barriers of the cold reactions Ni-64 + Pb-208 --> (272)110(*), Zn-70 + Pb-208 --> (278)112(*), Ge-76 + Pb-208 --> (284)114(*), Se-82 + Pb-208 --> (290)116(*), Kr-86 + Pb-208 --> (294)118(*). It is found that the neck in the quasi-molecular shape is responsible for the deep valley of the fusion barrier. In the cold fusion path, double-hump fusion barriers could be predicted by the shell corrections and complete fusion events may occur.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224596900027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13982
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chen, BQ,Ma, ZY. Fusion barrier of super-heavy elements in a generalized liquid drop model[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2004,42(4):594-598.
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