EFFECT OF NUCLEAR VISCOSITY ON FISSION PROCESS

LI Shi-Dong; KUANG Hui-Shun; ZHANG Shu-Fa; XING Jing-Ru; ZHUO Yi-Zhong; WU Xi-Zhen; FENG Ren-Fa

Chinese Physics C> 1989, Vol. 13> Issue(2) : 164-172

EFFECT OF NUCLEAR VISCOSITY ON FISSION PROCESS

National University of Defence Technology,Changsha2 Institute of Atomic Energy,Beijing

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Abstract：
According to the fission diffusion model,the deformation motion of fission nucleues is regarded as a diffusion process of quasi-Brownian particles under fission potential,Through simulating such Brownian motion in two dimensional phase space by Monte-Carlo method,the effect of nuclear viscosity on Brownian particle diffusion is studied,Dynamical quantities,suchas fission rate,kinetic energy distribution on scission,and so on are numerally calculated for various viscosity coefficients,The results are reasonable in physics,This method can be easily extended to deal with multi-dimensional diffusion problems.

References

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I.普里戈金，“非平衡态统计力学".[2] H. A. Kramers, Physics, U11(1940), 284.[3] H. Hofmann, "Talk at the Topic Meeting on Phase Approach to Nuclear Dynamics", Sep,1985,Triesty Italy.[4] 吴锡真、卓益忠，高能物理与核物理，4(1980)，113,[5] E. Holob, D. Hilscher et al., Phys. Rev，C28(1983), 253.[6] D. J. Hinde,R. J. Charity et al，Phys. Rev. Lett., 52(1984) 986.[7] P. Grange, S. Hassani et al., Phys. Rev，C34(1986), 209[8] 李世东，“用Monte-Carlo方法模拟裂变过程”，第三界全国M-C学术会议论文，1986年10月，苏州.[9] J. R. Nix, A. J. Sierk et al., Nucl. Phys., A1424(1984), 239.[10] 吴锡真、卓益忠等，高能物理与核物理，7(1983)，716.[11] 卓益忠、冯仁发，原子核物理，6(1984)，113.

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LI Shi-Dong, KUANG Hui-Shun, ZHANG Shu-Fa, XING Jing-Ru, ZHUO Yi-Zhong, WU Xi-Zhen and FENG Ren-Fa. EFFECT OF NUCLEAR VISCOSITY ON FISSION PROCESS[J]. Chinese Physics C, 1989, 13(2): 164-172.

LI Shi-Dong, KUANG Hui-Shun, ZHANG Shu-Fa, XING Jing-Ru, ZHUO Yi-Zhong, WU Xi-Zhen and FENG Ren-Fa. EFFECT OF NUCLEAR VISCOSITY ON FISSION PROCESS[J]. Chinese Physics C, 1989, 13(2): 164-172. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

EFFECT OF NUCLEAR VISCOSITY ON FISSION PROCESS

Corresponding author: LI Shi-Dong,

National University of Defence Technology,Changsha2 Institute of Atomic Energy,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-02-05

Abstract: According to the fission diffusion model,the deformation motion of fission nucleues is regarded as a diffusion process of quasi-Brownian particles under fission potential,Through simulating such Brownian motion in two dimensional phase space by Monte-Carlo method,the effect of nuclear viscosity on Brownian particle diffusion is studied,Dynamical quantities,suchas fission rate,kinetic energy distribution on scission,and so on are numerally calculated for various viscosity coefficients,The results are reasonable in physics,This method can be easily extended to deal with multi-dimensional diffusion problems.