DIAGNOSTICS OF DC GLOW DISCHARGE IN A LONGITUDINAL MAGNETIC FIELD
Keywords:
DC glow discharge, plasma, magnetic field, Langmuir (electric) probe, spectrom- eterAbstract
Abstract. This article presents the results of a study of the characteristics of direct current
(DC) glow discharge in an external longitudinal magnetic field. The Langmuir electric probe
and emission spectrometer are used as diagnostics of glow discharge plasma. Using the current
– voltage characteristic (VAC) of a stratified glow discharge plasma, the main plasma parame-
ters, such as electron temperature, concentration of plasma particles were determined under var-
ious magnetic field conditions. With a relatively large magnetic field, it was determined that the
concentration of plasma particles increases and the electron temperature decreases. It was also
determined using the spectroscopic method that the luminosity of the discharge (intensity) of a
DC glow discharge increases with increasing value of the magnetic field. A qualitative interpre-
tation was made to explain the change in plasma parameters under various conditions of the
magnetic field.