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Evaporation of Intermediate-Mass Fragments From Hot-Nuclei in Reaction ̄(40)Ar+ ̄(159)Tb at 25MeV/u

Qian Xing;Jiang Dongxing;Qian Tao;Hua Hui;Lin Junsong(Department of Technical Physics,Peking University, Beijing 100871)Wu Enjiu;Zheng Jiwen;Jin Genming; Yin Shuzhi;Tan Jilian;Jin Weiyang;Song Mingtao;Li Zuyu;He zhiyong;Wang Sufang(Institute of Modern Phy  
The inclusive energy spectra of intermediate-mass fragments(IMF)(3≤Z≤9)have been measured in the range from 20°to 155°for 40Ar+159Tb reaction at 25MeV/u.At backward angles,the spectra of IMF show a characteristic of statistic evaporation and can be well fitted by a moving source with same parameters.The obtained source velocity and temperature are in agreement with the corresponding values of hot nuclei produced in an incomplete-fusion process.Therefore,it seems that there IMF are statistically evaporated from a same source.The experimental results have for compared with the predictions of the statistical model using GEMINI code.
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