Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

被引：0

作者：

张苏雅拉吐 ^{[1
]}

黄美容 ^{[1
]}

R.Wada ^{[2
]}

刘星泉 ^{[3
]}

林炜平 ^{[3
]}

王建松 ^{[3
]}

机构：

[1] College of Physics and Electronics Information,Inner Mongolia University for Nationalities

[2] Cyclotron Institute,Texas A&M University,College Station

[3] Institute of Modern Physics,Chinese Academy of Sciences

来源：

Chinese Physics C | 2017年 / 41卷 / 04期

基金：

中国国家自然科学基金;

关键词：

symmetry energy; modified Fisher model; antisymmetrized molecular dynamics simulations;

D O I：

暂无

中图分类号：

O571.6 [重离子核物理];

学科分类号：

0827 ; 082701 ;

摘要：

An attempt is made to study the symmetry energy at the time of primary fragment formation from the experimentally observed cold fragments for a neutron-rich system of;Ni +;Be at 140 MeV/nucleon,utilizing the recent finding that the excitation energy becomes lower for more neutron-rich isotopes with a given Z value.The extracted α;/T values from the cold fragments,based on the Modified Fisher Model（MFM）,are compared to those from the primary fragments of the antisymmetrized molecular dynamics（AMD） simulation and become consistent with the simulation when the I = N —Z value becomes larger,indicating that the excitation energy of these neutron-rich isotopes is indeed lower.

引用

页码：52 / 57

页数：6

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