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Fusion barrier of super-heavy elements in a generalized liquid drop model
Chen, BQ; Ma, ZY; Chen, BQ , Inst Atom Energy, Beijing 102413, Peoples R China.
2004
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号42期号:4页码:594-598
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.
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
关键词Nuclei
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224596900027
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13982
专题理论物理所1978-2010年知识产出
通讯作者Chen, BQ , Inst Atom Energy, Beijing 102413, Peoples R China.
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GB/T 7714
Chen, BQ,Ma, ZY,Chen, BQ , Inst Atom Energy, Beijing 102413, Peoples R China.. Fusion barrier of super-heavy elements in a generalized liquid drop model[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2004,42(4):594-598.
APA Chen, BQ,Ma, ZY,&Chen, BQ , Inst Atom Energy, Beijing 102413, Peoples R China..(2004).Fusion barrier of super-heavy elements in a generalized liquid drop model.COMMUNICATIONS IN THEORETICAL PHYSICS,42(4),594-598.
MLA Chen, BQ,et al."Fusion barrier of super-heavy elements in a generalized liquid drop model".COMMUNICATIONS IN THEORETICAL PHYSICS 42.4(2004):594-598.
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