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Title: Unified description of nuclear stopping in central heavy-ion collisions from 10A MeV to 1.2A GeV

Abstract

A detailed analysis of the wide excitation function of nuclear stopping has been conducted within a transport model, isospin-dependent quantum molecular dynamics model, and an overall good agreement with the INDRA and FOPI Collaborations' experimental data has been achieved. It is found that the mean value of isotropy in central heavy-ion collision (HIC) reaches a minimum near-Fermi energy and approaches a maximum at around 300-400A MeV. This suggests that, in statistical average, the equilibration is far from being reached, even in central HIC especially near Fermi energy. A hierarchy in the stopping of fragments, which favors heavy fragments to penetrate, provides a robust restriction on the global trend of nuclear stopping and could serve as a probe for nuclear equations of state.

Authors:
;  [1];  [2]; ; ; ; ; ;  [1]
  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
  2. (China)
Publication Date:
OSTI Identifier:
21596763
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034612; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EQUATIONS OF STATE; EXCITATION FUNCTIONS; GEV RANGE 01-10; HEAVY ION REACTIONS; ISOSPIN; ISOTROPY; MEV RANGE; MOLECULAR DYNAMICS METHOD; STOPPING POWER; TRANSPORT THEORY; CALCULATION METHODS; CROSS SECTIONS; DIFFERENTIAL CROSS SECTIONS; ENERGY RANGE; EQUATIONS; FUNCTIONS; GEV RANGE; NUCLEAR REACTIONS; PARTICLE PROPERTIES

Citation Formats

Zhang, G. Q., Zhou, C. L., Graduate School of the Chinese Academy of Sciences, Beijing 100080, Ma, Y. G., Cao, X. G., Cai, X. Z., Fang, D. Q., Tian, W. D., and Wang, H. W. Unified description of nuclear stopping in central heavy-ion collisions from 10A MeV to 1.2A GeV. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034612.
Zhang, G. Q., Zhou, C. L., Graduate School of the Chinese Academy of Sciences, Beijing 100080, Ma, Y. G., Cao, X. G., Cai, X. Z., Fang, D. Q., Tian, W. D., & Wang, H. W. Unified description of nuclear stopping in central heavy-ion collisions from 10A MeV to 1.2A GeV. United States. doi:10.1103/PHYSREVC.84.034612.
Zhang, G. Q., Zhou, C. L., Graduate School of the Chinese Academy of Sciences, Beijing 100080, Ma, Y. G., Cao, X. G., Cai, X. Z., Fang, D. Q., Tian, W. D., and Wang, H. W. Thu . "Unified description of nuclear stopping in central heavy-ion collisions from 10A MeV to 1.2A GeV". United States. doi:10.1103/PHYSREVC.84.034612.
@article{osti_21596763,
title = {Unified description of nuclear stopping in central heavy-ion collisions from 10A MeV to 1.2A GeV},
author = {Zhang, G. Q. and Zhou, C. L. and Graduate School of the Chinese Academy of Sciences, Beijing 100080 and Ma, Y. G. and Cao, X. G. and Cai, X. Z. and Fang, D. Q. and Tian, W. D. and Wang, H. W.},
abstractNote = {A detailed analysis of the wide excitation function of nuclear stopping has been conducted within a transport model, isospin-dependent quantum molecular dynamics model, and an overall good agreement with the INDRA and FOPI Collaborations' experimental data has been achieved. It is found that the mean value of isotropy in central heavy-ion collision (HIC) reaches a minimum near-Fermi energy and approaches a maximum at around 300-400A MeV. This suggests that, in statistical average, the equilibration is far from being reached, even in central HIC especially near Fermi energy. A hierarchy in the stopping of fragments, which favors heavy fragments to penetrate, provides a robust restriction on the global trend of nuclear stopping and could serve as a probe for nuclear equations of state.},
doi = {10.1103/PHYSREVC.84.034612},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}