,Projectile fragment emission in the fragmentation of 56Fe on Al, C, and CH2 targets

• 作 者: Luo-Huan Wang Liang-Di Huo Jia-Huan Zhu Hai-Rui Duan Jing-Ya Wu Hui-Ling Li Jun-Sheng Li S.Kodaira N.Yasuda Dong-Hai Zhang
• 机 构: Institute of Modern Physics, Shanxi Normal University, Linfen 041004, China“,”Radiation Measurement
• 出 处: 核技术（英文版）
• 发表日期: 2019年12期
• 关键词: Heavy-ion collision Projectile fragmentation Nuclear temperature CR-39 plastic n

The emission angle distribution of projectile fragments (PFs) and the temperature of PF emission sources for fragmentation of 56Fe on polyethylene, carbon, and aluminum targets at the highest energy of 497 A MeV are investigated on the basis of corrected data, using a CR-39 plastic nuclear track detector. It is found that the aver-age emission angle of PFs increases with the decrease in PF charge for the same target, and no obvious dependence of angular distribution on the mass of the target nucleus is found for the same PF. The cumulative squared transverse momentum distribution of PFs can be well represented by a single Rayleigh distribution. The temperature of PF emis-sion sources is extracted from the distribution, and it is about 1.0–8.0 MeV and does not depend on the mass of the target for PFs with charges of 9≤Z≤25.