Medium Influence of the Nucleon-Nucleon Cross Section on the Fragmentation

Chin. Phys. Lett.

2003, Vol. 20

Issue (6): 832-835 DOI:

Original Articles

Medium Influence of the Nucleon-Nucleon Cross Section on the Fragmentation

LIU Jian-Ye^1,2,3,4;XING Yong-Zhong^1,2;GUO Wen-Jun³

¹Institute for Theory of Modern Physics, Tianshui Normal University, Tianshui 741000 ²Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 ³Institute of Modern Physics, Chinese Academy of Sciences, PO Box 31, Lanzhou 730000 ⁴CCAST (Word Laboratory), PO Box 8730, Beijing 100080

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LIU Jian-Ye, XING Yong-Zhong, GUO Wen-Jun 2003 Chin. Phys. Lett. 20 832-835

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Abstract Based on an isospin-dependent quantum molecular dynamics model we studied the influence of a medium correction of an isospin-dependent nucleon-nucleon cross section on the fragmentation at the intermediate energy heavy ion collisions. We found that the medium correction from an isospin-dependent nucleon-nucleon cross section increases the dependence of the fragmentation on the isospin effect of in-medium nucleon-nucleon cross section, at the same time, the momentum-dependent interaction also produces an important role for enhancing the influence of the medium correction on the isospin effect of two-body collisions in the fragmentation process.

Keywords: 25.70.Pq

Published: 01 June 2003

PACS:

25.70.Pq

(Multifragment emission and correlations)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I6/0832

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