Three-dimensional Ion Distribution in a Filtered Vacuum Arc Discharge

Journal Article · Mon Dec 04 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2405943· OSTI ID:20898808

Kelly, H; Marquez, A; Pirrera, M ^[1]

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1. Instituto de Fisica del Plasma, CONICET-Dpto. de Fisica, FCEN, UBA, Ciudad Universitaria Pab. 1 (1428EHA) Ciudad de Buenos Aires (Argentina)

Three-dimensional measurements of the ion flux along the filter of a magnetically filtered d-c vacuum arc are presented. The device includes a metallic plasma-generating chamber with cooper electrodes coupled to a substrate chamber through a quarter-torus magnetic filter. The filtering magnetic field was high enough to magnetize the electrons but not the ions. The ion current distribution was studied using a multi-element Cu probes, placed at three different positions along the filter. The ion saturation current of each probe was measured by biasing the probe at -70V with respect the grounded anode. Preliminary results of the three dimensional ion flux distribution and the floating potential of the plasma as functions of the bias filter voltage and magnetic field intensity are reported.

• OSTI ID: 20898808
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 875; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
ELECTRIC ARCS
ELECTRIC POTENTIAL
ELECTRONS
IONS
MAGNETIC FIELDS
MAGNETIC FILTERS
PLASMA
SPATIAL DISTRIBUTION
THREE-DIMENSIONAL CALCULATIONS