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

作　　者：刘星泉 黄美容 Roy Wada 林炜平 任培培 陈志强 肖国青 闵春华 张苏雅拉图 韩瑞 靳增雪 刘建立 石福栋 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]College of Information and Software Engineering,University of Electronic Science and Technology

出　　处：《Nuclear Science and Techniques》2015年第2期117-123,共7页核技术（英文）

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)

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.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.

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 

分 类 号：O571.6[理学—粒子物理与原子核物理]