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Chin. Phys., 2006, Vol. 15(7): 1486-1491    DOI: 10.1088/1009-1963/15/7/018

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

Luo Zheng-Minga, Deng Bai-Quanb, Peng Li-Linb, Yan Jian-Chengb, Chen Zhib
a Center of Radiation Physics, Sichuan University, Chengdu 610064, China; b Southwestern Institute of Physics, Chengdu 610041,China
Abstract  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 are 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.
Keywords:  runaway electron      bipartition model      transport theory      sputtering     
Received:  08 December 2005      Published:  20 July 2006
PACS:  28.52.Fa (Materials)  
  52.25.Fi (Transport properties)  
  52.77.-j (Plasma applications)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 19889502).

Cite this article: 

Deng Bai-Quan, Peng Li-Lin, Yan Jian-Cheng, Luo Zheng-Ming, Chen Zhi Damaging impacts of energetic charge particles on materials in plasma energy explosive events 2006 Chin. Phys. 15 1486

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