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Investigation on anomalous diffusion for nuclear fusion reactions
Bao, JD; Zhuo, YZ; Bao, JD , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
2003
发表期刊PHYSICAL REVIEW C
ISSN0556-2813
卷号67期号:6页码:-
摘要A simple model for diffusion of a particle with initial velocity coupled to a non-Ohmic environment over a barrier is proposed. An exact expression for the passing probability of the particle over a parabolic potential barrier is obtained. It is shown that in the case of subdiffusion, more than half of the particles cannot overcome the barrier, no matter what the initial velocity is. However, in the case of superdiffusion, a minimum critical velocity needed for passing over the barrier is found, which can lead to a strong friction and make the passing probability increase with kinetic energy, but still slower than in the case of normal diffusion. Effects of quantum diffusion and zero point fluctuation are also discussed. The model is applied to solve a long-standing problem in nuclear fusion reactions, though the mechanism found in this study can have a rather broad application.
部门归属Beijing Normal Univ, Dept Phys, Beijing 100875, 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Transition-state Theory Quantum Brownian-motion Dissipative Systems Langevin Equation Decay-rates Dynamics Kramers Limit Force
学科领域Physics
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收录类别SCI
WOS记录号WOS:000183878900038
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被引频次:44[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/311006/13286
专题理论物理所SCI论文
通讯作者Bao, JD , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
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Bao, JD,Zhuo, YZ,Bao, JD , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.. Investigation on anomalous diffusion for nuclear fusion reactions[J]. PHYSICAL REVIEW C,2003,67(6):-.
APA Bao, JD,Zhuo, YZ,&Bao, JD , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China..(2003).Investigation on anomalous diffusion for nuclear fusion reactions.PHYSICAL REVIEW C,67(6),-.
MLA Bao, JD,et al."Investigation on anomalous diffusion for nuclear fusion reactions".PHYSICAL REVIEW C 67.6(2003):-.
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