Energy analysis of H− ions from a hollow-discharge duoplasmatron
- 1 July 1977
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 48 (7), 2668-2672
- https://doi.org/10.1063/1.324134
Abstract
Energy spectra of H− ions from a HDD source operating in mixtures of helium, hydrogen, and cesium reveal that negative ions are generated by a volume process and by a surface process. A marked difference was observed in the pressure dependence of the low‐ and high‐energy groups, corresponding to the volume and the surface processes, respectively. The active surfaces could be identified. Some evidence that, besides collisional attachment processes, ion‐molecular reactions have an influence on the yield of H− ions in volume reactions could be found.Keywords
This publication has 3 references indexed in Scilit:
- Studies of the hollow discharge duoplasmatron as a source of H− ionsReview of Scientific Instruments, 1976
- Mechanism for negative-ion production in the surface-plasma negative-hydrogen-ion sourceJournal of Applied Physics, 1976
- Formation of Negative Hydrogen Ions in Direct Extraction SourcesReview of Scientific Instruments, 1973