Liquid-gas phase transition and isospin fractionation in intermediate energy heavy ion collisions
文献类型：期刊论文
| 作者 | Liu, JY; Xing, YZ; Guo, WJ |
| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
 |
| 出版日期 | 2004-06-01 |
| 卷号 | 28期号:6页码:607-610 |
| 关键词 | isospin fractionation liquid-gas phase transition heavy ion collision |
| ISSN号 | 0254-3052 |
| 英文摘要 | The liquid-gas phase transition in the heavy ion collisions and nuclear matter has been an important topic and got achievements, such as, based on the studies by H. Q. Song et al the critical temperature of liquid-gas phase transition enhances with increasing the mass of system and reduces as the increase of the neutron proton ratio of system. As we know that both the liquid-gas phase transition and the isospin fractionation occur in the spinodal instability region at the nuclear density below the normal nuclear density. In particular, these two dynamical processes lead to the separation of nuclear matter into the liquid phase and gas phase. In this case to compare their dynamical behaviors is interested. We investigate the dependence of isospin fractionation degree on the mass and neutron proton ratio of system by using the isospin dependent quantum molecular dynamics model. We found that the degree of isospin fractionation (N/Z)(n)/(N/Z)(imf) decreases with increasing the mass of the system. This is just similar to the enhance of the critical temperature of liquid-gas phase transition T-c as the increase of system mass. Because the enhance of T-c is not favorable for the liquid-gas transition taking place, which reduces the isospin fractionation process and leads to decrease of (N/Z)(n)/(N/Z)(imf). However the degree of isospin fractionation enhances with increasing the neutron proton ratio of the system. It is just corresponding to the reduce of T-c of the liquid-gas phase transition as the increase of the isospin fractionation of the system. Because the reduce of T-c enhances the liquid-gas phase transition process and also prompts the isospin fractionation process leading the increase of the isospin fractionation degree. To sum up, there are very similar dynamical behaviors for the degree of isospin fractionation and the critical temperature of the liquid-gas phase transition. So dynamical properties of the liquid-gas phase transition can be measured and studied through the studies of isospin fractionation experimentally. |
| WOS关键词 | NUCLEAR-EQUATION ; FRAGMENTATION ; DEPENDENCE ; STATE ; FLOW ; MATTER ; PROBE |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000222105900008 |
| 出版者 | SCIENCE CHINA PRESS |
| 公开日期 | 2010-10-29 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/1671]  |
| 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 | Xing, YZ |
| 作者单位 | 1.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 2.Tianshui Normal Univ, Inst Theory Modern Phys, Tianshui 741000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 4.CCAST, World Lab, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, JY,Xing, YZ,Guo, WJ. Liquid-gas phase transition and isospin fractionation in intermediate energy heavy ion collisions[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2004,28(6):607-610. |
| APA | Liu, JY,Xing, YZ,&Guo, WJ.(2004).Liquid-gas phase transition and isospin fractionation in intermediate energy heavy ion collisions.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,28(6),607-610. |
| MLA | Liu, JY,et al."Liquid-gas phase transition and isospin fractionation in intermediate energy heavy ion collisions".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 28.6(2004):607-610. |
入库方式： OAI收割
来源：近代物理研究所
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