Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions
	Wang, J ; Ma, YG ; Zhang, GQ ; Shen, WQ
刊名	PHYSICAL REVIEW C
	2014
卷号	90 期号:5
关键词	RELATIVISTIC NUCLEAR COLLISIONS PLUS AU COLLISIONS QUANTUM MOLECULAR-DYNAMICS ELLIPTIC FLOW ANISOTROPIC FLOW FRAGMENT FORMATION EQUATION STATE MOTION PLANE
ISSN号	0556-2813
通讯作者	ygma@sinap.ac.cn
英文摘要	A systemical analysis of the initial fluctuation effect on the collective flows for Au + Au at 1A GeV is presented in the framework of isospin-dependent quantum molecular dynamics model (IQMD), and a special focus on the initial fluctuation effect on the squeeze out is emphasized. The flows calculated by the participant plane reconstructed by the initial geometry in coordinate space are compared with those calculated by both the ideal reaction-plane and event-plane methods. It is found that initial fluctuation weakens the squeeze-out effect, and some discrepancies between the flows extracted by these different plane methods appear, which indicate that the flows are affected by the evolution of dynamics. In addition, we find that the squeeze-out flow is also proportional to initial eccentricity. Our calculations also qualitatively give a trend for the excitation function of the elliptic flow similar to that of the FOPI Collaboration experimental data. Finally, we address the nucleon number scaling of the flows for light particles. Even though the initial fluctuation significantly decreases the ratio nu(4)/nu(2)(2) and nu(3)/(nu(1)nu(2)), all fragments to mass number 4 keep the same curve and show independence from transverse momentum.
收录类别	SCI
语种	英语
WOS记录号	WOS:000344489100003
公开日期	2015-03-13
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/14100]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Wang, J,Ma, YG,Zhang, GQ,et al. Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions[J]. PHYSICAL REVIEW C,2014,90(5).
APA	Wang, J,Ma, YG,Zhang, GQ,&Shen, WQ.(2014).Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions.PHYSICAL REVIEW C,90(5).
MLA	Wang, J,et al."Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions".PHYSICAL REVIEW C 90.5(2014).