Finding a Probe for Extracting Information on the Momentum Dependent-Interaction in Heavy Ion Collisions  

作　　者：LIU Jian-Ye GUO Wen-Jun 

机构地区：[1]College of Mathematics-Physics and Information, Tianshui Normal University, Tianshui 741001 [2]Institute of Modern Physics, Chinese Academy of Sciences, PO Box 31, Lanzhou 730000 [3]Science College, University of Shanghai for Science and Technology, Shanghai 200093 [4]Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000

出　　处：《Chinese Physics Letters》2010年第6期70-73,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10435080（key project）, 10575075 and 10905041, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant Nos KJCX2-SW-N02.

摘　　要：The effect of momentum-dependent interaction on the kinetic energy spectrum of the neutron-proton ratio （ （n/p）gas）b（ Ek ） for 64Zn ＋64Zn is studied. It is found that （ （n/p）gas）b（ Ek ） sensitively depends on the momentumdependent interaction and weakly on the in-medium nucleon-nucleon cross section and symmetry potential. Therefore （ （n/p）gas）b（ Ek ） is a possible probe for extracting information on the momentum-dependent interaction in heavy ion collisions.The effect of momentum-dependent interaction on the kinetic energy spectrum of the neutron-proton ratio （ （n/p）gas）b（ Ek ） for 64Zn ＋64Zn is studied. It is found that （ （n/p）gas）b（ Ek ） sensitively depends on the momentumdependent interaction and weakly on the in-medium nucleon-nucleon cross section and symmetry potential. Therefore （ （n/p）gas）b（ Ek ） is a possible probe for extracting information on the momentum-dependent interaction in heavy ion collisions.

分 类 号：O571.6[理学—粒子物理与原子核物理] TP391.41[理学—物理]