中国物理B ›› 2012, Vol. 21 ›› Issue (11): 110501-110501.doi: 10.1088/1674-1056/21/11/110501
张东海, 李俊生, 李惠玲
Zhang Dong-Hai (张东海), Li Jun-Sheng (李俊生), Li Hui-Ling (李惠玲 )
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.
中图分类号: (Quantum phase transitions)