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TsAGI Science Journal

ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2015013558
pages 949-955

SPHERICAL PROBE IN STEADY-STATE PLASMA IN A MAGNETIC FIELD: THE CASE OF A THICK SPACE-CHARGE LAYER

Alexey Vasil’evich Kashevarov
Central Aerohydrodynamic Institute (TsAGI), 1 Zhykovsky Str., Zhukovsky, Moscow Region, 140180, Russian Federation
Associate professor in physics at Moscow Aviation Institute

RÉSUMÉ

In the present study, the current-voltage characteristics are calculated for a spherical probe placed in steady-state slightly ionized plasma in the presence of a magnetic field. The consideration is restricted to the case of an extra-thick space-charge layer. It is shown that the magnetic field prevents the charged particles from penetrating the probe, such that the current in the probe is significantly reduced. The lines of equally charged particle concentrations around the probe and the current density distributions along the spherical surface are presented.


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