Energy analysis of H−ions from a hollow‐discharge duoplasmatron

Autor:	K. Wiesemann, Th. Sluyters, K. Prelec
Rok vydání:	1977
Předmět:	Hydrogen chemistry Volume (thermodynamics) Physics::Plasma Physics Yield (chemistry) Duoplasmatron Analytical chemistry General Physics and Astronomy chemistry.chemical_element Plasma Helium Charged particle Ion
Zdroj:	Journal of Applied Physics. 48:2668-2672
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.324134
Popis:	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.
Databáze:	OpenAIRE
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