PHYSICAL AND MATHEMATICAL MODEL OF THE DISTRIBUTION OF CHARGED PLASMA PARTICLES OF A POSITIVE GAS DISCHARGE COLUMN IN A TRANSVERSE MAGNETIC FIELD

If the active medium of a gas-discharge laser is placed in a transverse magnetic field, the electron distribution of the low-temperature plasma will change, which leads to a change in the output characteristic of the laser. This paper presents an analysis of the distribution of charged particles in the radial direction under the influence of a transverse magnetic field. Calculations in accordance with the physical and mathematical model show that the influence of the transverse magnetic field leads to the compression of the plasma to one side of the tube, the central region of the plasma is shifted from the center of coordinates by a certain distance. An experimental verification of the adequacy of the considered physical and mathematical model was carried out by placing the laser discharge tube in a transverse magnetic field. The use of a vacuum system makes it possible to fill the laser volume with different gases at different pressures in the tube. It is assumed that the region of the maximum concentration of charged particles corresponds to the highest brightness of the glow discharge region, where the gas is most intensively excited. The discrepancy between the calculation results for the considered model and the experimental data is less than 5 %.

Authors: S. A. Martsinukov, D. K. Kostrin

Direction: Physics

Keywords: Gas-discharge laser, low-temperature plasma, transverse magnetic field, charged particles, positive column, physical and mathematical model

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