ENHANCED NEUTRON EM1SSION IN HEAVY ION REACTIONS BY DIFFUSION MODEL |
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| Authors: | LU Zhong-dao ZHANG Jing-shang FENG Ren-fa ZHUO Yi-zhong |
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| Affiliation: | Institute of Atomic Energy, Academia Sinica, P.O. Box 275, Beijing, China |
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| Abstract: | An extensive Smoluchowski equation with neutron emission is suggested in this paper and is analytically solved by means of van Kampen technique.The average fission rate,fission probability,the ratio of neutron emission to fission are calculated for composite nucleus 240PU. The time evolution of these quantities is analysed and their essential dependence on fission potential height and nuclear temperature are discussed.A fair1y substantial particle evaporation prior to fission in heavy-ion reactions can be well understood in our diffusion model. |
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