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Plasma wall interaction is a very important problem for fusion devices especially for magnetically confined plasmas, because the discharge time is about ten to more than a thousand times of the particle confinement time. Particles incident to the wall consist of ions and neutral particles. Their flux densities and energy distributions are studied by surface diagnostics and plasma edge modellings. Sputtering and recycling are at the moment the two main processes for wall plasma interaction. The former introduces impurity contamination and enhances radiation loss, while the latter mainly relates to the refuelling problem. Erosion due to plasma wall interaction is the last problem to be solved to realize fusion reactor.Institute of Plasma Physics, Nagoya University, Nagoya, Japan.(Received November 5, 1980) Plasma wall interaction is a very important problem for fusion devices especially for magnetically confined plasmas, because the discharge time is about ten to more than a thousand times of the particle confinement time. Particles incident to the wall consist of ions and neutral particles. Their flux densities and energy distributions are studied by surface diagnostics and plasma edge modellings. Sputtering and recycling are at the moment the two main processes for wall plasma interaction. The former introduces impurity contamination and enhances radiation loss, while the latter mainly relates to the refuelling problem. Erosion due to plasma wall interaction is the last problem to be solved to realize fusion reactor.
- 公益社団法人 日本表面科学会の論文
公益社団法人 日本表面科学会 | 論文
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