Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems

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	Connection between the largest Lyapunov exponent, density fluctuation, and multifragmentation in excited nuclear systems
	Zhang, YX; Wu, XZ; Li, ZX; Zhang, YX , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
刊名	PHYSICAL REVIEW C
	2004
卷号	69 期号:4 页码:-
关键词	Quantum Molecular-dynamics Heavy-ion Collisions Gas Phase-transition Fragment Formation Energy Fluctuations Drops Model Chaos State
ISSN号	0556-2813
英文摘要	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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000221427500044
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14104]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Zhang, YX , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
推荐引用方式 GB/T 7714	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):-.