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题名: Effect of proximity force on potential barrier in fusion reaction
作者: Chen, BQ ;  Ma, ZY
刊名: HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
出版日期: 2004
卷号: 28, 期号:10, 页码:1079-1082
关键词: SUPERHEAVY NUCLEI ;  CROSS-SECTIONS ;  ALPHA-DECAY ;  ELEMENTS
学科分类: Physics
通讯作者: Chen, BQ , Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.
部门归属: Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; China Inst Atom Energy, Beijing 102413, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The macroscopic deformed potential energies for fusion reactions are determined within a generalized liquid drop model (GLDM) which includes the volume-, surface-, and Coulomb- energies, the proximity effects, the mass asymmetry, and an accurate nuclear radius. In ordinary fission studies, it is assumed that the surface and Coulomb-energies control the hight and width of the barrier. The surface energy E-S takes into account only the effect of the surface tension force and does not include the contribution of the attractive nuclear forces between surfaces in regard to the neck or the gap between the nascent fragments. The nuclear proximity energy is adopted to take into account these additional surface effects in general liquid drop model. At the contact point, the proximity energy reaches maximum while it decreases both sides till to zero. The proximity energy decreases the barrier height by several MeV and moves the position of the barrier top forward, which corresponds to two separated fragments in unstable equilibrium by the balance between the attractive nuclear proximity force and the repulsive Coulomb force in the GDLM. It turns out that a wide macroscopic potential pocket in fusion process is formed due to proximity energy and appears at large deformation. This behavior does not appear at the barrier for the fusion reaction of light nucleus-nucleus collision.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224543200012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13987
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. Effect of proximity force on potential barrier in fusion reaction[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2004,28(10):1079-1082.
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