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Impact parameter selected nuclear temperatures of hot nuclei from excited state populations for 40Ar+197 Au reactions at E/A=25MeV
Authors:Zu-Yu Li  Zhi-Yong He  Li-Min Duan  Gen-Ming Jin  He-Yu Wu  Bao-Guo Zhang  Wan-Xin Wen  Yu-Jin Qi  Qing-Zheng Luo  Guang-Xi Dai  Hong-Wei Wang
Affiliation:1. Institute of Modern Physics, Chinese Academy of Sciences, P. O. Box 31, Lanzhou, 730000, P. R. China
Abstract:
Nuclear temperatures extracted from excited state populations were measured as a function of linear momentum transfer (LMT) for 40Ar+197 Au reactions at 25MeV/nucleon. The emission temperatures increased slightly with increasing linear momentum transfer or decreasing impact parameter. Taking into account the corrections of detection efficiency and sequential feeding from higher-lying states, a temperature of T ≈ 4MeV was deduced for central collisions. For peripheral collisions the extracted temperatures increased with the energy of the particles.
Keywords:
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