Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions

YANG Lin-Meng; GUO Wen-Jun; ZHANG Yun-Peng; ZHANG Xiao-Ji

doi:10.1088/1674-1137/38/7/074105

Chinese Physics C> 2014, Vol. 38> Issue(7) : 074105 DOI: 10.1088/1674-1137/38/7/074105

Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions

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In the framework of the isospin-dependent quantum molecular dynamics transport model (QMD), the effects of symmetry potential on the collision number and the neutron-proton bremsstrahlung photon in the reactions of ⁴⁰Ca+⁴⁰Ca, ¹²⁴Sn+¹²⁴Sn, ⁴⁰Ca+⁶⁴Zn, ⁴⁰Ca+¹²⁴Sn at different incident beam energies are studied. It is found that the collision number shows moderate sensitivity to the stiffness of the symmetry potential and the number of hard photons calculated with stiff symmetry potential is obviously smaller than that with soft symmetry potential. Thus, the neutron-proton bremsstrahlung photons produced in heavy-ion collisions may be a useful probe for the high-density behavior of the nuclear symmetry potential.

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YANG Lin-Meng, GUO Wen-Jun, ZHANG Yun-Peng and ZHANG Xiao-Ji. Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions[J]. Chinese Physics C, 2014, 38(7): 074105. doi: 10.1088/1674-1137/38/7/074105

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Received: 2013-09-02
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions

Corresponding author: GUO Wen-Jun,

Received Date: 2013-09-02

Accepted Date: 1900-01-01

Available Online: 2014-07-05

Abstract: In the framework of the isospin-dependent quantum molecular dynamics transport model (QMD), the effects of symmetry potential on the collision number and the neutron-proton bremsstrahlung photon in the reactions of ⁴⁰Ca+⁴⁰Ca, ¹²⁴Sn+¹²⁴Sn, ⁴⁰Ca+⁶⁴Zn, ⁴⁰Ca+¹²⁴Sn at different incident beam energies are studied. It is found that the collision number shows moderate sensitivity to the stiffness of the symmetry potential and the number of hard photons calculated with stiff symmetry potential is obviously smaller than that with soft symmetry potential. Thus, the neutron-proton bremsstrahlung photons produced in heavy-ion collisions may be a useful probe for the high-density behavior of the nuclear symmetry potential.

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Probing the symmetry potential with neutron-proton bremsstrahlung in heavy-ion collisions

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