Isoscaling Parameter α as a Possible Probe of Medium Effect of Nucleon--Nucleon Cross Section
LIU Jian-Ye1,2,3, HAO Huan-Feng2, XING Yong-Zhong1,2,3, ZUO Wei2,3, LEE Xi-Guo2,3
1Institute of Basic Physics, College of Mathematics-Physics and Information, \\Tianshui Normal University, Tianshui 7410002Institute of Modern Physics, Chinese Academy of Sciences, PO Box 31, Lanzhou 7300003Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
Isoscaling Parameter α as a Possible Probe of Medium Effect of Nucleon--Nucleon Cross Section
LIU Jian-Ye1,2,3;HAO Huan-Feng2;XING Yong-Zhong1,2,3;ZUO Wei2,3;LEE Xi-Guo2,3
1Institute of Basic Physics, College of Mathematics-Physics and Information, \\Tianshui Normal University, Tianshui 7410002Institute of Modern Physics, Chinese Academy of Sciences, PO Box 31, Lanzhou 7300003Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
摘要The medium effect of nucleon--nucleon cross section σmedNN(αm) on the isoscaling parameter α is investigated for two central nuclear reactions 40Ca+40Ca, 60Ca+60Ca within isospin-dependent quantum molecular dynamics at beam energies from 40 to 50MeV/nucleon. It is found that there is the very obvious medium effects of nucleon--nucleon cross section σmedNN(αm) on the isoscaling parameters α. In this case the isoscaling parameter α is a possible probe of the medium effect of nucleon--nucleon cross section σmedNN(αm) in the heavy ion collisions. The mechanism of the above-mentioned properties is studied and discussed.
Abstract：The medium effect of nucleon--nucleon cross section σmedNN(αm) on the isoscaling parameter α is investigated for two central nuclear reactions 40Ca+40Ca, 60Ca+60Ca within isospin-dependent quantum molecular dynamics at beam energies from 40 to 50MeV/nucleon. It is found that there is the very obvious medium effects of nucleon--nucleon cross section σmedNN(αm) on the isoscaling parameters α. In this case the isoscaling parameter α is a possible probe of the medium effect of nucleon--nucleon cross section σmedNN(αm) in the heavy ion collisions. The mechanism of the above-mentioned properties is studied and discussed.
LIU Jian-Ye;;HAO Huan-Feng;XING Yong-Zhong;;ZUO Wei;LEE Xi-Guo;. Isoscaling Parameter α as a Possible Probe of Medium Effect of Nucleon--Nucleon Cross Section[J]. 中国物理快报, 2007, 24(7): 1873-1875.
LIU Jian-Ye, , HAO Huan-Feng, XING Yong-Zhong, , ZUO Wei, LEE Xi-Guo,. Isoscaling Parameter α as a Possible Probe of Medium Effect of Nucleon--Nucleon Cross Section. Chin. Phys. Lett., 2007, 24(7): 1873-1875.
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