title: Effect of energy relaxation of H(0) atoms at the wall on the production profile of H(-) ions in large negative ion sources.
abstract: Production and transport processes of the H(0) atoms are numerically simulated using a three-dimensional Monte Carlo transport code. The code is applied to the large JAEA 10 ampere negative ion source under a Cs-seeded condition to obtain a spatial distribution of surface-produced H(-) ions. In this analysis, we focus on the effect of the energy relaxation of the H(0) atoms at the wall on the H(-) ion production from the H(0) atoms. The result indicates that, by considering the energy relaxation of the H(0) atoms at the wall, the production profile of the surface-produced H(-) ion is well reflected in the production profile of the H(0) atom production.
authors.affiliation: Keio University, Yokohama, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Takado
authors.forename: D
authors.initials: D
authors.lastname: Matsushita
authors.forename: I
authors.initials: I
authors.lastname: Fujino
authors.forename: A
authors.initials: A
authors.lastname: Hatayama
authors.forename: H
authors.initials: H
authors.lastname: Tobari
authors.forename: T
authors.initials: T
authors.lastname: Inoue