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Zhang, YX; Wu, XZ; Li, ZX; Zhang, YX , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems
发表期刊PHYSICAL REVIEW C
关键词Quantum Molecular-dynamics Heavy-ion Collisions Gas Phase-transition Fragment Formation Energy Fluctuations Drops Model Chaos State
摘要Within a quantum molecular dynamics model we calculate the largest Lyapunov exponent (LLE), the density fluctuation, and the mass distribution of fragments for a series of nuclear systems at different initial temperatures. It is found that the LLE peaks at the temperature ("critical temperature") where the density fluctuation reaches a maximal value and the mass distribution of fragments is best fitted by the Fisher's power law from which the critical exponents for mass and charge distribution are obtained. The time-dependent behavior of the LLE and density fluctuation is studied. We find that the time scale of the density fluctuation is much longer than that of the inverse LLE, which indicates that chaotic motion can be well developed during the process of fragment formation. The finite-size effect on "critical temperature" for nuclear systems ranging from calcium to superheavy nuclei is also studied.
2004
ISSN0556-2813
卷号69期号:4页码:-
学科领域Physics
收录类别SCI
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被引频次:6[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/311006/14104
专题理论物理所科研产出_SCI论文
通讯作者Zhang, YX , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
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Zhang, YX,Wu, XZ,Li, ZX,et al. Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems[J]. PHYSICAL REVIEW C,2004,69(4):-.
APA Zhang, YX,Wu, XZ,Li, ZX,&Zhang, YX , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China..(2004).Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems.PHYSICAL REVIEW C,69(4),-.
MLA Zhang, YX,et al."Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems".PHYSICAL REVIEW C 69.4(2004):-.
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