Isospin Fractionation process in intermediate energy heavy ion collisions
文献类型：期刊论文
| 作者 | Liu, JY; Xing, YZ; Zuo, W; Li, XG; Guo, WJ |
| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
 |
| 出版日期 | 2003-10-01 |
| 卷号 | 27期号:10页码:897-900 |
| 关键词 | isospin fractionation chemical potential symmetry potential |
| ISSN号 | 0254-3052 |
| 英文摘要 | The isospin fractionation in intermediate energy heavy ion collisions is studied by using isospin dependence quantum molecular dynamics model. At first, the reaction productions in isospin fractionation process is separated into a gas phase and a liquid phase. The gas phase includes free neutrons and protons. But there are many choices for the liquid phase, we select the fragments from the region of 1 < Z < ( Z(P) + Z(T))/2 as the liquid phase, here Z; Z(P) and Z(T) are charge of the fragment, projectile and target, respectively. For considering the influence of projectile-like and target-like, we choose the upper limit of charges to ( Z(P) + Z(T))/2. We define the degree of isospin fractionation as a ratio of gas phase neutron-proton ratio ( N/Z)(gas) to liquid phase neutron-proton ratio ( N/Z)(liq). The calculated results show that the degree of isospin fractionation is sensitive to the symmetry potential and insensitive to isospin dependent neucleon-neucleon cross section. This sensitivity mainly comes from the gas part of the isospin fractionation. The liquid part is insensitive to the symmetry potential. So we may compare the theory calculation results with the experimental data directly to get the knowledge of symmetry potential. The calculated results also show that the ( N/Z), is larger than the ( N/ Z)(sys) of the colliding system but the (N/ Z)(liq) is less than the (N/ Z)(sys) for the neutron-rich system. Finally, the isospin fractionation process is not sensitive to the choices for the fragments of liquid phase. |
| WOS关键词 | ENTRANCE CHANNEL DEPENDENCE ; FRAGMENTATION ; PROBE |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000185935300012 |
| 出版者 | SCIENCE CHINA PRESS |
| 公开日期 | 2010-10-29 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/1629]  |
| 专题 | 近代物理研究所_近代物理研究所知识存储（2010之前） |
| 通讯作者 | Guo, WJ |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Tianshui Normal Coll, Inst Theory Modern Phys, Tianshui 741000, Peoples R China 3.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, JY,Xing, YZ,Zuo, W,et al. Isospin Fractionation process in intermediate energy heavy ion collisions[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2003,27(10):897-900. |
| APA | Liu, JY,Xing, YZ,Zuo, W,Li, XG,&Guo, WJ.(2003).Isospin Fractionation process in intermediate energy heavy ion collisions.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,27(10),897-900. |
| MLA | Liu, JY,et al."Isospin Fractionation process in intermediate energy heavy ion collisions".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 27.10(2003):897-900. |
入库方式： OAI收割
来源：近代物理研究所
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