粒子在高温高密度氘氚等离子体中输运和能量沉积率的有限元.PDF

204JOURNAL OF NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY Vol.20 No.4 1998 王尚武　王同权 ( 410073) : - Fokker Planck Fokker- Planck , , ( ) , , , , ,Fokker- Planck , , , O242. 21,TL329 The Finite Element Calculation of Particle Transport and Energy Deposition Rate in High - Temperature High Density Deuterium Tritium Plasma Wang Shangw Wang Tongquan (Department of Applied Physics,NUDT,Changsha, 410073) AbstractIn this paper,the time-dependent Fokker-Planck equation of particle angular density - - distribution function in one dimensional spherical symmetric D T plasma is seperated to two equations relevant to velocity and ordinates when discreted in time domain. Thevelocity variable in thesetwo e- quations is treated by multigroup method, while the ordinate variables are treated by finite element , . , method thus two finite element equations are obtained By couple calculation of these two equations the variation of particle angular distribution function vs time is calculated numerically. Based on these results,the time and space distribution of energy deposition rates of particles to ions and elec- trons in plasma are calculated respectively,and the total energy deposition rate of particles to back- ground plasma is also obtained. Key wordsD-T plasma, particle transport, Fokker-Planck equation,variable seperation,fini