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Symmetry energy extraction from primary fragments in intermediate heavy-ion collisions

ISSN号：1674-1137
期刊名称：《中国物理C：英文版》
时间：0
分类：O572[理学—粒子物理与原子核物理;理学—物理] O571.6[理学—粒子物理与原子核物理;理学—物理]
作者机构：[1]Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China, [2]University of Chinese Academy of Sciences, Beijing 100049, China, [3]College of Information and Software Engineering, University of Electronic Science and Technology, Chengdu 610054, China
相关基金：Supported by the National Natural Science Foundation of China（Nos.11075189 and 11205209）; 100 Persons Project（Nos.0910020BR0and Y010110BR0）; ADS project 302（No.Y103010ADS）of the Chinese Academy of Sciences; the U.S.Department of Energy（No.DE-FG03-93ER40773）; the Robert A.Welch Foundation（No.A0330）.ACKNOWLEDGMENTS This work was partially supported by the visiting senior international scientists programs （2012T 1JY3-2010T2J22） of CAS. The authors thank Prof. J. B. Natowitz and Prof. A. Bonasera for their financial support of their work in the US.

作者：刘星泉[1,2], 黄美容[1], Roy Wada[1], 林炜平[1,2], 任培培[1,2], 陈志强[1], 肖国青[1], 闵春华[3], 张苏雅拉图[1,2], 韩瑞[1], 靳增雪[1,2], 刘建立[1], 石福栋[1]

关键词：对称能, 重离子碰撞, 提取, 主段, 重离子反应, 分子动力学, 费米能级, 自洽方法, Intermediate energy heavy ion reactions,Symmetry energy,Density,Temperature,Modified Fisher model,Selfconsistent method

中文摘要：

An improved method is proposed for the extraction of the symmetry energy coefficient relative to the temperature, asym/T, for the heavy-ion reactions near the Fermi energy region, based on the modified Fisher Model(MFM). This method is applied to the primary fragments of the Anti-symmetrized Molecular Dynamics(AMD)simulations for the reactions of40 Ca + 40 Ca at 35 Me V/nucleon. The density and the temperature at the fragment formation stage are extracted using a self-consistent method.

英文摘要：

An improved method is proposed for the extraction of the symmetry energy coefficient relative to the temperature, asym/T, for the heavy-ion reactions near the Fermi energy region, based on the modified Fisher Model（MFM）. This method is applied to the primary fragments of the Anti-symmetrized Molecular Dynamics（AMD）simulations for the reactions of^40 Ca ＋^ 40 Ca at 35 Me V/nucleon. The density and the temperature at the fragment formation stage are extracted using a self-consistent method.

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