Effective mass splitting of neutron and proton and isospin emission in heavy-ion collisions
文献类型：期刊论文
| 作者 | Feng, Zhao-Qing
|
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2012-03-15 |
| 卷号 | 878页码:3-13 |
| 关键词 | Isospin And Momentum Dependent Transport Model Isospin Particles Symmetry Energy Effective Mass Splitting |
| ISSN号 | 0375-9474 |
| DOI | 10.1016/j.nuclphysa.2012.01.014 |
| 文献子类 | Article |
| 英文摘要 | Within the framework of an isospin and momentum dependent transport model, the emissions of isospin particles (nucleons and light clusters) squeezed out in heavy-ion collisions are investigated as probes of the poorly known symmetry energy at high baryon density. Two different mass splittings of neutrons and protons in nuclear medium as m(n)* > m(p)* and m(n)* < m(p)* are used in the model and their influence on the isospin emission in heavy-ion collisions is discussed thoroughly. The competition between the stiffness and the momentum dependence of the symmetry potential on reaction dynamics are compared and systematically analyzed. It is found that the difference of the neutron and proton directed flows and the transverse momentum distribution of the neutron/proton ratio are sensitive to the stiffness of the symmetry energy, which cannot be changed with the controversial effective mass splitting. The elliptic flows of free nucleons at high transverse momentum within mid-rapidity emission are to be promising observables as distinguishing the nucleon effective mass splitting. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS关键词 | FUSION REACTIONS ; COULOMB BARRIER ; DYNAMICS ; MODEL ; FLOW |
| 资助项目 | National Natural Science Foundation of China[10805061] ; National Natural Science Foundation of China[11175218] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000301756200002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/49049]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Feng, Zhao-Qing |
| 作者单位 | Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Zhao-Qing. Effective mass splitting of neutron and proton and isospin emission in heavy-ion collisions[J]. NUCLEAR PHYSICS A,2012,878:3-13. |
| APA | Feng, Zhao-Qing.(2012).Effective mass splitting of neutron and proton and isospin emission in heavy-ion collisions.NUCLEAR PHYSICS A,878,3-13. |
| MLA | Feng, Zhao-Qing."Effective mass splitting of neutron and proton and isospin emission in heavy-ion collisions".NUCLEAR PHYSICS A 878(2012):3-13. |
入库方式： OAI收割
来源：近代物理研究所
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