Non-uniform structure of a large-scale low-pressure radio-frequency inductive discharge in magnetic field
Zudin I. Yu.
1, Korobkov S. V.
1, Strikovskiy A. V.
1, Istomin A. A.
1, Kochedykov V. V.
1, Katkov A. N.
1, Pleshkov D. S.
1, Petrova I. A.
1, Loskutov K. N.
1, Gushchin M. E.
11Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: zudiniy@ipfran.ru, korobkov@ipfran.ru, strik@ipfran.ru, ist@ipfran.ru, v.kochedykov@ipfran.ru, catkow.sascha@yandex.ru, i.petrova@ipfran.ru, lokons@ipfran.ru, mguschin@ipfran.ru
It has been found out that a pulsed low-pressure radio-frequency (RF) inductive discharge in a large volume in external magnetic field has a non-uniform (filamentary) structure. At magnetic fields of several hundred gauss, the developing discharge irregularities whose transverse scale is about 10 cm are not smoothed out by diffusion and persist at the stage of plasma decay. Such instability should be considered when designing large-scale various-application pulsed devices employing RF discharges. Keywords: magnetoactive plasma, RF discharge, instability.
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