@article{7246, author = {M. L. Solomon and V. Anita and C. Costin and I. Mihaila and G. Popa and H. van der Meiden and R. Al and M. van de Pol and G. J. van Rooij and J. Rapp}, title = {Multi-Channel Analyzer Investigations of Ion Flux at the Target Surface in Pilot-PSI}, 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}, year = {2010}, journal = {Contributions to Plasma Physics}, volume = {50}, number = {9}, pages = {898-902}, month = {Nov}, isbn = {0863-1042}, url = {://000284135100019 }, note = {ISI Document Delivery No.: 679BTTimes Cited: 0Cited Reference Count: 9Sp. Iss. SI}, language = {English}, }