Electron yield of glow discharge cathode materials under helium ion bombardment
Date
1988
Authors
Rocca, Jorge J., author
Szapiro, B., author
Prabhuram, T., author
American Institute of Physics, publisher
Journal Title
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Abstract
The secondary electron emission coefficient of materials for helium ion bombardment in the energy range 0.5-20 keV was measured for the surface conditions of cathodes in high voltage glow discharges. The materials studied are oxidized aluminum, oxidized magnesium, a molybdenum-aluminum oxide sintered composite, molybdenum, stainless steel, copper, gold, and graphite. Each sample was surface conditioned by operating it as cathode of a helium glow discharge shortly before the electron yield measurement. The results are relevant to the modeling of glow discharges and the design of cold cathode electron guns.