Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

GUO Wen-Jun; LIU Jian-Ye; ZUO Wei; XING Yong-Zhong; LI Xi-Guo; LI Zeng-Hua

Chinese Physics C> 2002, Vol. 26> Issue(12) : 1264-1270

Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 730000,China3 Department of Physics,Tianshui Normal College,Gansu Tianshui 741000,China

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Abstract：
Effects of the symmetry potential U^sym and the isospin dependence of in-medium nucleon-nucleon cross section N_n( N_p) on the number of neutron (proton) emitted as well as their dependence on the momentum dependent interaction (MDI) are studied within an isospin dependent Quantum Molecular Dynamics (IQMD) model. The isospin dependence nucleon-nucleon cross section is found to have a much stronger influence on the N_n( N_p) especially for the neutron-deficient collision system with MDI in the energy region from about 100 to 400MeV/nucleon. The calculation results are clear to show that the number of neutron (proton) emitted during reaction in the neutron-deficient system,depends sensitively on the isospin dependence of in-medium nucleon-nucleon cross section and weakly on the symmetry potential with MDI. In this case one can make use of the number of neutron (proton) emitted as a probe to extract simultaneously both the magnitude and the in-medium nucleon-nucleon cross section.

References

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GUO Wen-Jun, LIU Jian-Ye, ZUO Wei, XING Yong-Zhong, LI Xi-Guo and LI Zeng-Hua. Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions[J]. Chinese Physics C, 2002, 26(12): 1264-1270.

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Received: 2001-12-13
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

Corresponding author: GUO Wen-Jun,

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 730000,China3 Department of Physics,Tianshui Normal College,Gansu Tianshui 741000,China

Received Date: 2001-12-13

Accepted Date: 1900-01-01

Available Online: 2002-12-05

Abstract: Effects of the symmetry potential U^sym and the isospin dependence of in-medium nucleon-nucleon cross section N_n( N_p) on the number of neutron (proton) emitted as well as their dependence on the momentum dependent interaction (MDI) are studied within an isospin dependent Quantum Molecular Dynamics (IQMD) model. The isospin dependence nucleon-nucleon cross section is found to have a much stronger influence on the N_n( N_p) especially for the neutron-deficient collision system with MDI in the energy region from about 100 to 400MeV/nucleon. The calculation results are clear to show that the number of neutron (proton) emitted during reaction in the neutron-deficient system,depends sensitively on the isospin dependence of in-medium nucleon-nucleon cross section and weakly on the symmetry potential with MDI. In this case one can make use of the number of neutron (proton) emitted as a probe to extract simultaneously both the magnitude and the in-medium nucleon-nucleon cross section.

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Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

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