Chemical instability and mechanical instability in asymmetric nuclear matter
文献类型：期刊论文
| 作者 | Li, WF; Zhang, FS |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2001-10-01 |
| 卷号 | 50期号:4-5页码:1888-1895 |
| 关键词 | equation of state of asymmetry nuclear matter chemical instability mechanical instability |
| ISSN号 | 1000-3290 |
| 英文摘要 | Using a temperature, density, isospin and momentum dependent equation of state of nuclear matter obtained within the framework of Extended Skryme Hartree-Fock theory, we study the chemical and mechanical instabilities of nuclear matter at different temperatures, density and relative neutron excess, and compare them with the results of the simplified three-parameter potentials, namely soft and hard potentials in which the symmetry energy part is added by hand. It is found that the asymmetric nuclear matter has remarkable chemical instability in the mechanically stable region. The relationship between the mechanical and chemical instabilities is different from the result of soft and hard potentials, which is shown to result from the difference of the density dependence form of single particle potentials. We also provide the chemical and mechanical spinodal regions in pressure-density plane, and their isospin dependence is discussed. In particular, the behaviours of chemical instability around the critical temperature and the possible consequences in heavy-ion collisions at intermediate energy are investigated. |
| WOS关键词 | MULTIFRAGMENT PRODUCTION ; ISOSPIN |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000172252300012 |
| 出版者 | CHINESE PHYSICAL SOC |
| 公开日期 | 2010-10-29 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/1213]  |
| 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 | Li, WF |
| 作者单位 | 1.CCAST, World Lab, Beijing 100080, Peoples R China 2.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, WF,Zhang, FS. Chemical instability and mechanical instability in asymmetric nuclear matter[J]. ACTA PHYSICA SINICA,2001,50(4-5):1888-1895. |
| APA | Li, WF,&Zhang, FS.(2001).Chemical instability and mechanical instability in asymmetric nuclear matter.ACTA PHYSICA SINICA,50(4-5),1888-1895. |
| MLA | Li, WF,et al."Chemical instability and mechanical instability in asymmetric nuclear matter".ACTA PHYSICA SINICA 50.4-5(2001):1888-1895. |
入库方式： OAI收割
来源：近代物理研究所
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