中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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; Wada, Roy2; Chen Zhiqiang2; Zhao Minghui1,2
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

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