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Effect of proximity force on potential barrier in fusion reaction
Chen, BQ; Ma, ZY; Chen, BQ , Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.
2004
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN0254-3052
卷号28期号:10页码:1079-1082
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.
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
关键词Superheavy Nuclei Cross-sections Alpha-decay Elements
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224543200012
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13987
专题理论物理所1978-2010年知识产出
通讯作者Chen, BQ , Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.
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Chen, BQ,Ma, ZY,Chen, BQ , Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.. Effect of proximity force on potential barrier in fusion reaction[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2004,28(10):1079-1082.
APA Chen, BQ,Ma, ZY,&Chen, BQ , Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China..(2004).Effect of proximity force on potential barrier in fusion reaction.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,28(10),1079-1082.
MLA Chen, BQ,et al."Effect of proximity force on potential barrier in fusion reaction".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 28.10(2004):1079-1082.
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