Effect of transverse magnetic field on low pressure argon discharge

Abstract

A numerical simulation was performed to investigate the effect of transverse magnetic fields on low pressure argon plasma. Discovering the variations in electric field, electric potential, power consumption in plasma, and dominant physical mechanisms after application of magnetic fields is the main output of this analysis. A simulation was performed using the finite element method. A 2-fluid model equipped with chemical reaction equations in argon plasma, heat transfer equation, and Poisson's equation was used to describe the plasma behavior. Two disk-shaped electrodes separated by 12 mm from each other were considered as a plasma chamber and an external transverse magnetic field applied. Simulation results show an upset in the electric field after application of a magnetic field. This perturbation is because of the change in particle velocities due to the magnetic field. Changes in electric potential distribution, power loss, and heat transfer procedure are the events described in this paper.

DC Current Interruption Based on Vacuum Arc Impacted by Ultra-Fast Transverse Magnetic Field

“…A DC voltage source with an amplitude of 1000 V supplied the current of 50 A through a 20 Ohm resistance, which is placed in series with the interrupter. The employed physical model was as described in [14]. The continuity equation of electrons, mass conservation equations of heavy species were considered as well as the heat transfer and Maxwell equations [15][16][17][18][19].…”

“…In Equations (13) and (14), v electron,th , γ ion , ε ion , ε, Γ electron,injected , and n are the electron thermal velocity, secondary electron emission coefficient, mean energy of the ion secondary emitted electrons, mean energy of thermally emitted electrons, total injected electron flux, and normal vector, respectively. The total injected electron flux was determined by the current flowing through the plasma by the external circuit as described later.…”

“…The plasma chamber was assumed to carry the current of 50 A in the diffused mode. Copper vapor plasma with the pressure of 10 mbar was assumed between contacts [14].…”

Sheet Plasma Excitation by a 2.45 GHz Microwave Power Introduced through a Local Gas Injection Type Dielectric Window

“…Effects due to change in magnetic field intensity to sustain plasmas have been discussed by several researchers [1][2][3][4][5][6]. Krinberg [1] observed the limit whereby the effect of the applied magnetic field can be used to reduce the size of the plasma column, increase the electron temperature and the average ion charge.…”

“…Krinberg [1] observed the limit whereby the effect of the applied magnetic field can be used to reduce the size of the plasma column, increase the electron temperature and the average ion charge. Hashemi et al [2] reported that a constriction of the plasma flow was observed with a decrease in plasma jet radius causing an additional Joule heating in a plasma. Woo et al [5] identified the effect of ion temperature anisotropy associated with the induction of a magnetic field.…”