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Temperature determined by isobaric yield ratios in a grand-canonical ensemble theory
Ma, Chun-Wang; Zhao, Xin-Li; Pu, Jie; Wang, Shan-Shan; Qiao, Chun-Yuan; Feng, Xiao; Wada, Roy; Ma, Yu-Gang
2013
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume88Issue:1
AbstractBackground: The temperature in heavy-ion collisions is an important question because it reflects the violence of the collisions and affects the results of many important parameters in nuclear physics.Purpose: In this work, we focus on the investigation of the temperature of the measured fragments in the 1A GeV Sn-112,Sn-124 + Sn-112,Sn-124, and Xe-124,Xe-36 + Pb reactions.Methods: The isobaric yield ratio method is deduced in a grand-canonical theory. The decay contribution and the pairing energy contribution to the free energy of the fragment are considered in the analysis.Results: For the odd I (I N - Z) fragment the decay or pairing energy contribution is found unnecessary. For the even I fragments, both the decay contribution and the decay plus pairing energy contribution can weaken the staggering in the isobaric yield ratios. For the odd I fragment, the temperature in this work is consistent with that of the modified Fisher model [Phys. Rev. C 86, 054611 (2012)]. For the even I fragment, the temperature at which the decay plus the pairing energy contribution have been taken in account is consistent with that of the the odd I fragments. The isospin dependence of the temperature determined by the isobaric yield ratio method is also found.Conclusions: In the grand-canonical theory, after the correction of the decay plus pairing energy to the free energy of the fragments, reasonable temperature of the even I fragment can be obtained.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000322084000004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13948
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Ma, Chun-Wang,Zhao, Xin-Li,Pu, Jie,et al. Temperature determined by isobaric yield ratios in a grand-canonical ensemble theory[J]. PHYSICAL REVIEW C,2013,88(1).
APA Ma, Chun-Wang.,Zhao, Xin-Li.,Pu, Jie.,Wang, Shan-Shan.,Qiao, Chun-Yuan.,...&Ma, Yu-Gang.(2013).Temperature determined by isobaric yield ratios in a grand-canonical ensemble theory.PHYSICAL REVIEW C,88(1).
MLA Ma, Chun-Wang,et al."Temperature determined by isobaric yield ratios in a grand-canonical ensemble theory".PHYSICAL REVIEW C 88.1(2013).
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