プラズマ-壁相互作用データベースの構築と関連コードの開発・整備による問題点の把握 : 黒鉛中の水素同位体の挙動と動的リサイクリングモデルおよび関連する拡散係数・再結合係数データベース

概要

論文の詳細を見る
For the purpose of evaluating transient recycling of hydrogen at plasma-facing materials, mass balance equations for mobile and trapped hydrogen atoms have been proposed, in which the elementary processes leading to re-emission, such as diffusion, detrapping, (re)trapping, and local molecular recombination are taken into account. Under appropriate conditions, it was demonstrated that the concentrations of mobile and trapped species can be analytically solved as functions of depth, time, or ion flux, and that the thermal desorption spectrum can be calculated from the time dependence of the concentration of trapped hydrogen atoms. It was also shown that by using the analytical solutions, the diffusion constant and the rate constant of effective local molecular recombinations can be determined experimentally. The experimental data on the diffusion coefficient and the molecular recombination rate are summarized and critically discussed using the solution of the mass balance equations.
プラズマ・核融合学会の論文
2002-02-25