title: Plasma-assisted catalytic ionization using porous nickel plate.
abstract: Hydrogen atomic pair ions, i.e., H(+) and H(-) ions, are produced by plasma-assisted catalytic ionization using a porous nickel plate. Positive ions in a hydrogen plasma generated by dc arc discharge are irradiated to the porous plate, and pair ions are produced from the back of the irradiation plane. It becomes clear that the production quantity of pair ions mainly depends on the irradiation current of positive ions and the irradiation energy affects the production efficiency of H(-) ions.
authors.affiliation: Department of Electronic Device Engineering, Yamaguchi University, Ube 755-8611, Japan.
authors.forename: W
authors.initials: W
authors.lastname: Oohara
authors.forename: T
authors.initials: T
authors.lastname: Maeda
authors.forename: T
authors.initials: T
authors.lastname: Higuchi