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Takato, Naoyuki; Hanatani, Junji*; Mizuno, Takatoshi*; Hatayama, Akiyoshi*; Tobari, Hiroyuki; Hanada, Masaya; Inoue, Takashi; Taniguchi, Masaki; Dairaku, Masayuki; Kashiwagi, Mieko; et al.
AIP Conference Proceedings 925, p.38 - 45, 2007/09
The production and transport processes of the H atom are numerically simulated to obtain the H atom density. The three dimensional transport code using the Monte Carlo method has been applied to H atoms in the large "JAEA 10 ampere negative ion source" under the Cs-seeded condition. In this study, the production rate of H atoms through the dissociation process of H molecules is estimated from single probe characteristics of the Langmuir probe measurement. In addition, the energy relaxation process of H atoms is also considered. The results show that the existence of high-energy electrons and the energy relaxation process of H atoms affect the H atom density.