Multi-Channel Analyzer Investigations of Ion Flux at the Target Surface in Pilot-PSI

TitleMulti-Channel Analyzer Investigations of Ion Flux at the Target Surface in Pilot-PSI
Publication TypeJournal Article
Year of Publication2010
AuthorsM.L Solomon, V. Anita, C. Costin, I. Mihaila, G. Popa, H. van der Meiden, R. Al, M. van de Pol, G.J van Rooij, J. Rapp
JournalContributions to Plasma Physics
Volume50
Number9
Pagination898-902
Date PublishedNov
Type of ArticleArticle
ISBN Number0863-1042
Accession NumberISI:000284135100019
Keywordsion flux, MAGNETIZED PLASMA, plane probe, plasma diagnostic
Abstract

Pilot-PSI is a linear plasma device designed for investigations of plasma-surface interaction. A cascaded-arc plasma source operated in argon or/and hydrogen generates a high-density plasma that is magnetically confined on the vessel's axis, resulting a plasma column of about 1-2 cm in diameter which interacts with a solid target. A multi-channel analyzer was constructed to study the radial distribution of the ion flux at the target surface. The analyzer was placed in the centre of Pilot-PSI target and current-voltage characteristics were drawn for five collectors disposed at different radial positions. The ion flux was estimated from the ion part of the current-voltage characteristic for each collector. For densities lower than 10(19) m(-3) (significantly below the maximum performance of Pilot-PSI), fluxes of up to 10(23) ions/m(2)s were measured. A difference of a factor four was measured between the maximum ion flux in the centre of the target and the flux at the edge, at a radial position of 1 cm. (C) 2010 WILEY-VCH Verlag GmbH & Co KGaA. Weinheim

URL<Go to ISI>://000284135100019
Division

PSI

PID

a6d978278971a5fc610a4bfc3f97abd6

Alternate TitleContrib. Plasma Phys.

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