Damaging impacts of energetic charge particles on materials in plasma energy explosive events  

作　　者：邓柏权 彭利林 严建成 罗正明 陈志 

机构地区：[1]Southwestern Institute of Physics, Chengdu 610041, China [2]Center of Radiation Physics, Sichuan University, Chengdu 610064, China

出　　处：《Chinese Physics B》2006年第7期1486-1491,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 19889502）.

摘　　要：To provide some reference data for estimation of the erosion rates and lifetimes of some candidate plasma facing component （PFC） materials in the plasma stored energy explosive events （PSEEE）, this paper calculates the sputtering yields of Mo, W and deuterium saturated Li surface bombarded by energetic charged particles by a new sputtering physics description method based on bipartition model of charge particle transport theory. The comparisons with Monte Carlo data of TRIM code and experimental results axe made. The dependences of maximum energy deposition, particle and energy reflection coefficients on the incident energy of energetic runaway electrons impinging on the different material surfaces are also calculated. Results may be useful for estimating the lifetime of PFC and analysing the impurity contamination extent, especially in the PSEEE for high power density and with high plasma current fusion reactor.To provide some reference data for estimation of the erosion rates and lifetimes of some candidate plasma facing component （PFC） materials in the plasma stored energy explosive events （PSEEE）, this paper calculates the sputtering yields of Mo, W and deuterium saturated Li surface bombarded by energetic charged particles by a new sputtering physics description method based on bipartition model of charge particle transport theory. The comparisons with Monte Carlo data of TRIM code and experimental results axe made. The dependences of maximum energy deposition, particle and energy reflection coefficients on the incident energy of energetic runaway electrons impinging on the different material surfaces are also calculated. Results may be useful for estimating the lifetime of PFC and analysing the impurity contamination extent, especially in the PSEEE for high power density and with high plasma current fusion reactor.

关 键 词：SPUTTERING bipartition model transport theory runaway electron 

分 类 号：O571.5[理学—粒子物理与原子核物理]