Generation and Measurements of Ion Species from Vacuum Arcs

Autor:	S. Humphries, Gary Wayne Cooper, Mark E. Savage, C. Burkhart, D. M. Woodall, L. K. Len
Rok vydání:	1986
Předmět:	Nuclear and High Energy Physics Materials science Ion beam Analytical chemistry Vacuum arc Condensed Matter Physics Ion Electric arc Physics::Plasma Physics Electrode Atomic physics Electric current Spectroscopy Current density
Zdroj:	IEEE Transactions on Plasma Science. 14:256-260
ISSN:	1939-9375 0093-3813
DOI:	10.1109/tps.1986.4316537
Popis:	We have measured the ion flux for different electrode materials in a vacuum arc. The vacuum arc has a point-plane geometry. The ion species in the generated plasma are identified using a time-of-flight (TOF) spectrometer. Ion species that have been generated to date include D+, Mg+, Mg++, Al+, Al++, Al+++, Ti+, Ti++, Ni+, Ni++, Cu+, Cu++, Zn+, Zn++, and In+. We found that in all cases, the ion flux measured is directly proportional to the interelectrode gap spacing and to the arc current. Typical current densities measured were ~300 mA · cm-2 at a distance of 10 cm from the gap for 150-?s pulse. The study will be used for the development of a multiple-arc array source for application to intense ion beam generation.
Databáze:	OpenAIRE
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