Extracting  Information  of  Nucleon-nucleon  Cross Section  from   Energy  Spectrum

ZHANG  Xiao-ji; GUO  Wen-jun; ZHANG  Fan; NI Sheng

doi:10.11804/NuclPhysRev.29.03.230

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ZHANG Xiao-ji, GUO Wen-jun, ZHANG Fan, NI Sheng. Extracting Information of Nucleon-nucleon Cross Section from Energy Spectrum[J]. Nuclear Physics Review, 2012, 29(3): 230-234. doi: 10.11804/NuclPhysRev.29.03.230

Citation:

ZHANG Xiao-ji, GUO Wen-jun, ZHANG Fan, NI Sheng. Extracting Information of Nucleon-nucleon Cross Section from Energy Spectrum[J]. Nuclear Physics Review, 2012, 29(3): 230-234. doi: 10.11804/NuclPhysRev.29.03.230

Extracting Information of Nucleon-nucleon Cross Section from Energy Spectrum

doi: 10.11804/NuclPhysRev.29.03.230

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2012-09-20

Abstract

The collision of different neutron/proton ratio， intermediate mass reaction systems(⁷⁶Zn+⁷⁶Zn， ⁷⁶Ge+⁷⁶Ge，⁷⁶Se+⁷⁶Se and ⁷⁶Kr+⁷⁶Kr) at the beam energy of 30~200 MeV/u are studied by using isospindependent quantum molecular dynamics(IQMD) model. It is found that there exists a strong relationship between nuclear stopping and the ratio of different direction kinetic energy， and nuclear stopping can be replaced by the square root of the ratio of perpendicular and parallel total kinetic energy of fragments， and it can be used to extract information of isospindependent in medium nucleonnucleon cross section. This physical quantity can be easily measured in nuclear reaction experiments， and it is a better probe.
- kinetic energy spectrum,
- nucleon-nucleon cross section,
- nuclear stopping,
- quantum molecular dynamics model
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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

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Extracting Information of Nucleon-nucleon Cross Section from Energy Spectrum

doi: 10.11804/NuclPhysRev.29.03.230

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2012-09-20

Key words:

Abstract: The collision of different neutron/proton ratio， intermediate mass reaction systems(⁷⁶Zn+⁷⁶Zn， ⁷⁶Ge+⁷⁶Ge，⁷⁶Se+⁷⁶Se and ⁷⁶Kr+⁷⁶Kr) at the beam energy of 30~200 MeV/u are studied by using isospindependent quantum molecular dynamics(IQMD) model. It is found that there exists a strong relationship between nuclear stopping and the ratio of different direction kinetic energy， and nuclear stopping can be replaced by the square root of the ratio of perpendicular and parallel total kinetic energy of fragments， and it can be used to extract information of isospindependent in medium nucleonnucleon cross section. This physical quantity can be easily measured in nuclear reaction experiments， and it is a better probe.