Measurements of the influence of probe size on particle fluxes collected at the plasma edge of MT-1

L. Koltai, D. Hildebrandt, J. Bakos, P. Bachmann

Research output: Contribution to journalArticle

Abstract

Investigations of the influence of the most critical parameter, the probe size, on collected particle fluxes are presented. Plasma ion fluxes in both toroidal directions were monitored in the scrape-off layer of the MT-1 tokamak using single Langmuir probes and Mach number probes with different size of the separation sheet. The sheet sizes were between 3 × 3 mm2 and 15 × 15 mm2 and should disturb the local plasma at the sheet location in a quite different extent. The measurements show that the influence of the probe size on collected particle fluxes is much lower than expected from simple diffusion models.

Original languageEnglish
Pages (from-to)1050-1054
Number of pages5
JournalJournal of Nuclear Materials
Volume176-177
Issue numberC
DOIs
Publication statusPublished - Dec 3 1990

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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