Technical Physics
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Velocity of plasma rotation in reflex discharge with themionic cathode
Oiler A. P.1,2, Liziakin G. D.
1, Gavrikov A.V.
1,2, Smirnov V.P.1
1 Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
2Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
2Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
Email: andrey_oiler@mail.ru
This work is devoted to determining the azimuthal ion rotation velocity in a reflex discharge with a thermionic cathode. For the experimental determination of the ion velocity, a Mach probe with directional particle collection was used. The Mach probe rotation velocity measurements are compared with the drift speed in crossed Ex B fields, where the radial electric field is measured with an emissive probe. The rotation of the plasma was found to be predominantly due to this drift, corrected for centrifugal effects. One of the important results of the work is the determination of the ion temperature. The obtained value Ti=0.12 eV, agrees with the ion temperature estimates in works with similar experimental conditions. A general parameter has been obtained that makes it possible to estimate the necessity to take into account centrifugal effects under given conditions. Keywords: plasma, thermionic cathode, reflex discharge, ion rotation, crossed fields.
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