Single source emission of proton projectile fragments in nucleus-emulsion interactions

doi:10.1088/1674-1056/21/11/110501

中国物理B ›› 2012, Vol. 21 ›› Issue (11): 110501-110501.doi: 10.1088/1674-1056/21/11/110501

Single source emission of proton projectile fragments in nucleus-emulsion interactions

张东海, 李俊生, 李惠玲

Institute of Modern Physics, Shanxi Normal University, Linfen 041004, China

收稿日期:2012-03-29 修回日期:2012-05-26 出版日期:2012-10-01 发布日期:2012-10-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11075100) and Shanxi Scholarship Council of China (Grant No. 2011-058).

Single source emission of proton projectile fragments in nucleus-emulsion interactions

Zhang Dong-Hai (张东海), Li Jun-Sheng (李俊生), Li Hui-Ling (李惠玲 )

Institute of Modern Physics, Shanxi Normal University, Linfen 041004, China

Received:2012-03-29 Revised:2012-05-26 Online:2012-10-01 Published:2012-10-01
Contact: Zhang Dong-Hai E-mail:zhangdh@dns.sxnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11075100) and Shanxi Scholarship Council of China (Grant No. 2011-058).

摘要/Abstract

摘要： The projected angular distribution and transverse momentum distribution of proton projectile fragments produced in 3.7A GeV ¹⁶O, 500A MeV ⁵⁶Fe, and 1.7A GeV ⁸⁴Kr induced different kinds of emulsion targets (H, CNO, and AgBr) interactions are investigated. It is found that the projected angular distribution and transverse momentum distribution can be well represented by a single Gaussian distribution. Comparison of transverse momentum distribution with the Maxwell-Boltzmann distribution reveals that proton projectile fragments are emitted from a single-temperature emission source. The temperature is different for different colliding systems, and linearly depends on the target size.

关键词: nucleus-nucleus collision, proton projectile fragments, projectile fragmentation, nuclear emulsion

Abstract: The projected angular distribution and transverse momentum distribution of proton projectile fragments produced in 3.7A GeV ¹⁶O, 500A MeV ⁵⁶Fe, and 1.7A GeV ⁸⁴Kr induced different kinds of emulsion targets (H, CNO, and AgBr) interactions are investigated. It is found that the projected angular distribution and transverse momentum distribution can be well represented by a single Gaussian distribution. Comparison of transverse momentum distribution with the Maxwell-Boltzmann distribution reveals that proton projectile fragments are emitted from a single-temperature emission source. The temperature is different for different colliding systems, and linearly depends on the target size.

Key words: nucleus-nucleus collision, proton projectile fragments, projectile fragmentation, nuclear emulsion

中图分类号: (Quantum phase transitions)

05.30.Rt

52.25.Tx (Emission, absorption, and scattering of particles) 52.20.Hv (Atomic, molecular, ion, and heavy-particle collisions)

张东海, 李俊生, 李惠玲 . Single source emission of proton projectile fragments in nucleus-emulsion interactions[J]. 中国物理B, 2012, 21(11): 110501-110501.

Zhang Dong-Hai (张东海), Li Jun-Sheng (李俊生), Li Hui-Ling (李惠玲 ). Single source emission of proton projectile fragments in nucleus-emulsion interactions[J]. Chin. Phys. B, 2012, 21(11): 110501-110501.

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Single source emission of proton projectile fragments in nucleus-emulsion interactions

Single source emission of proton projectile fragments in nucleus-emulsion interactions

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