| Production of helium projectile fragments in {16O－emulsion interactions at 4.5 A GeV/c |
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| 引用本文： | 张东海,李振宇,李俊生,吴凤娟.Production of helium projectile fragments in {16O－emulsion interactions at 4.5 A GeV/c[J].中国物理 B,2004,13(8):1239-1245. |
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| 作者姓名： | 张东海 李振宇 李俊生 吴凤娟 |
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| 作者单位： | Institute of Modern Physics, Shanxi Teachers' University, Linfen 041004, China;Institute of Modern Physics, Shanxi Teachers' University, Linfen 041004, China;Institute of Modern Physics, Shanxi Teachers' University, Linfen 041004, China;Institute of Modern Physics, Shanxi Teachers' University, Linfen 041004, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 10275042), the Shanxi Provincial Natural Science Foundation (Grant No.20021007) and Shanxi Provincial Foundation for Returned Scholars of China. |
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| 摘 要： | The measurements of partial production cross sections of the multiple helium projectile fragments emitted at 4.5 A GeV/c {}^{16}O－Em interactions are reported. We have studied the production rate of helium projectile fragments due to fragmentation of {}^{16}O ions and compared it with that obtained from different projectiles at various energies. The dependence of on the mass number of the incident beams is formulated. The multiplicity distributions of the helium fragments produced in {}^{16}O－Em interactions at different energies exhibit Koba－Nielson－Olesen (KNO) scaling. The correlation of helium projectile fragments and target fragments is also investigated and it is found that the average of target fragments is increased with the decrease of the number of helium fragments in peripheral interactions.
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| 关 键 词： | 重离子碰撞 氦抛射断面 多重性相关 碰撞截面 KNO定标 原子核物理 |
| 收稿时间： | 2003-10-27 |
Production of helium projectile fragments in {16O－emulsion interactions at 4.5 A GeV/c |
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| Zhang Dong-Hai,Li Zhen-Yu,Li Jun-Sheng and Wu Feng-Juan.Production of helium projectile fragments in {16O－emulsion interactions at 4.5 A GeV/c[J].Chinese Physics B,2004,13(8):1239-1245. |
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| Authors: | Zhang Dong-Hai Li Zhen-Yu Li Jun-Sheng and Wu Feng-Juan |
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| Institution: | Institute of Modern Physics, Shanxi Teachers' University, Linfen 041004, China |
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| Abstract: | The measurements of partial production cross sections of the multiple helium projectile fragments emitted at 4.5 A GeV/c {}^{16}O－Em interactions are reported. We have studied the production rate of helium projectile fragments due to fragmentation of {}^{16}O ions and compared it with that obtained from different projectiles at various energies. The dependence of on the mass number of the incident beams is formulated. The multiplicity distributions of the helium fragments produced in {}^{16}O－Em interactions at different energies exhibit Koba－Nielson－Olesen (KNO) scaling. The correlation of helium projectile fragments and target fragments is also investigated and it is found that the average of target fragments is increased with the decrease of the number of helium fragments in peripheral interactions. |
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| Keywords: | relativistic heavy-ion collision helium projectile fragments KNO scaling production cross-section multiplicity correlation |
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