IMF production and symmetry energy in heavy ion collisions near Fermi energy
文献类型:期刊论文
作者 | Liu Xingquan1,2; Lin Weiping1,2; Huang Meirong2![]() ![]() |
刊名 | NUCLEAR SCIENCE AND TECHNIQUES
![]() |
出版日期 | 2013-10-01 |
卷号 | 24 |
关键词 | Intermediate Mass Fragment Production Differential Chemical Potential Double Ratio Temperature Density Symmetry Energy And Quantum Statistical Model |
ISSN号 | 1001-8042 |
文献子类 | Article |
英文摘要 | The symmetry energy at the time of the production of intermediate mass fragments (IMFs) is studied using experimentally observed IMF multiplicities combined with quantum statistical model calculations (QSM of Hahn and Stocker). The ratios of difference in chemical potentials between neutrons and protons relative to the temperature, (mu(n)-mu(p))/T, and the double ratio temperature, T, were extracted experimentally in the reactions of Zn-64,Zn-70, Ni-64+Ni-58,Ni-64, Sn-112,Sn-124, Au-197, Th-232 at 40A MeV. The extracted (mu(n)-mu(p))/T scales linearly with delta(NN), where delta(NN) is the asymmetry parameter, (N-Z)/A, of the emitting source and (mu(n)-mu(p))/T = (11.1 +/- 1.4)delta(NN)-0.21 was derived. The experimentally extracted (mu(n)-mu(p))/T and the double ratio temperatures are compared with those from the QSM calculations. The temperatures, T, and densities, rho, extracted from the (mu(n)-mu(p))/T values agreed with those from the double ratio thermometer which used the yield ratios of d, t, h and alpha particles. However the two analyses of the differential chemical potential analysis and the initial temperature analysis end up almost identical relation between T and rho. T=5.25 +/- 0.75 MeV is evaluated from the (mu(n)-mu(p))/T analysis, but no density determination was possible. From the extracted T value, the symmetry energy coefficient E-sym=14.6+3.5 MeV is determined for the emitting source of T=5.25+0.75 MeV. |
WOS关键词 | EMISSION TEMPERATURES ; MOLECULAR-DYNAMICS ; FRAGMENT FORMATION ; NUCLEI ; STATE ; CLUSTERS ; EQUATION ; MATTER ; YIELDS ; DECAY |
WOS研究方向 | Nuclear Science & Technology ; Physics |
语种 | 英语 |
WOS记录号 | WOS:000329686400002 |
出版者 | ELSEVIER SCIENCE BV |
源URL | [http://119.78.100.186/handle/113462/48483] ![]() |
专题 | 近代物理研究所_实验物理中心 |
通讯作者 | Wada, Roy |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Liu Xingquan,Lin Weiping,Huang Meirong,et al. IMF production and symmetry energy in heavy ion collisions near Fermi energy[J]. NUCLEAR SCIENCE AND TECHNIQUES,2013,24. |
APA | Liu Xingquan,Lin Weiping,Huang Meirong,Wada, Roy,Chen Zhiqiang,&Zhao Minghui.(2013).IMF production and symmetry energy in heavy ion collisions near Fermi energy.NUCLEAR SCIENCE AND TECHNIQUES,24. |
MLA | Liu Xingquan,et al."IMF production and symmetry energy in heavy ion collisions near Fermi energy".NUCLEAR SCIENCE AND TECHNIQUES 24(2013). |
入库方式: OAI收割
来源:近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。