Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions

In the framework of the isospin-dependent quantum molecular dynamics transport model （QMD）, the effects of symmetry potential on the collision number and the neutron-proton bremsstrahlung photon in the reactions of 40Ca＋40Ca, 124Sn＋124Sn, 40Ca＋64Zn, 40Ca＋124Sn at different incident beam energies are...

Full description

Saved in:
Bibliographic Details
Published inChinese physics C Vol. 38; no. 7; pp. 59 - 62
Main Author 杨林孟 郭文军 张云鹏 张霄吉
Format Journal Article
LanguageEnglish
Published 01.07.2014
Subjects
Beams (radiation)
Bremsstrahlung
Collisions
Mathematical models
Molecular dynamics
Photons
Symmetry
Transport
中子
同位旋相关
对称性
碰撞数
质子
轫致辐射
重离子碰撞
量子分子动力学
Online AccessGet full text

Cover

More Information
Summary:In the framework of the isospin-dependent quantum molecular dynamics transport model （QMD）, the effects of symmetry potential on the collision number and the neutron-proton bremsstrahlung photon in the reactions of 40Ca＋40Ca, 124Sn＋124Sn, 40Ca＋64Zn, 40Ca＋124Sn at different incident beam energies are studied. It is found that the collision number shows moderate sensitivity to the stiffness of the symmetry potential and the number of hard photons calculated with stiff symmetry potential is obviously smaller than that with soft symmetry potential. Thus, the neutron-proton bremsstrahlung photons produced in heavy-ion collisions may be a useful probe for the high-density behavior of the nuclear symmetry potential.
Bibliography:In the framework of the isospin-dependent quantum molecular dynamics transport model （QMD）, the effects of symmetry potential on the collision number and the neutron-proton bremsstrahlung photon in the reactions of 40Ca＋40Ca, 124Sn＋124Sn, 40Ca＋64Zn, 40Ca＋124Sn at different incident beam energies are studied. It is found that the collision number shows moderate sensitivity to the stiffness of the symmetry potential and the number of hard photons calculated with stiff symmetry potential is obviously smaller than that with soft symmetry potential. Thus, the neutron-proton bremsstrahlung photons produced in heavy-ion collisions may be a useful probe for the high-density behavior of the nuclear symmetry potential.
11-5641/O4
symmetry potential, neutron-proton bremsstrahlung, heavy-ion collisions, quantum molecular dynamics model
YANG Lin-Meng,GUO Wen-Jun,ZHANG Yun-Peng,ZHANG Xiao-Ji （1.College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China;2.Department of Physics and Astronomy, Texas A＆M University-Commerce, Commerce, TX 75429, USA;3.School of Mechatronics, Northwestern Polytechnical University, Xi＇an 710072, China）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/7/074105