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Probing the isospin dependent in-medium nucleon–nucleon cross section by nucleon emissions |
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| Authors: | Jian-Ye Liu Wen-Jun Guo Yong-Zhong Xing Wei Zuo Xi-Guo Lee Zeng-Hua Li |
| Institution: | a Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, PR China b Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China c Department of Physics, Tianshui Normal College, Gansu Tianshui, 741000, PR China |
| Abstract: | The effects of the symmetry potential and the isospin dependent in-medium nucleon–nucleon (NN) cross section on the number of proton(neutron) emissions Np(Nn) are studied respectively within an isospin-dependent quantum molecular dynamics (IQMD) model. The isospin dependent in-medium NN cross section is found to have a strong influence on Np(Nn) but Np(Nn) is not sensitive to the symmetry potential for the neutron-deficient colliding system at relatively high energies. We propose to make use of the Np(Nn) as a probe to extract information on the isospin dependent in-medium NN cross section. |
| Keywords: | Isospin effect Nucleon emission Nucleon–nucleon cross section Symmetry potential |
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