Microwave Discharge Control by Magnetic Field

High Speed Flow Control Using Microwave Energy Deposition

“…A significant momentary reduction in surface pressure (and hence drag) is evident. The plasma generated by microwave energy deposition is characterized by a warm ionized region surrounding a tangle of high temperature plasma filaments [2] as shown in Fig. 3.…”

“…Several recent papers have examined the effect of laser energy deposition (laser spark) as a mechanism for both initiation and control of microwave energy deposition in air (e.g., Mashek et al [12], Brovkin et al [2]). In particular, Brovkin et al [3] have shown that a laser precursor can significantly reduce the microwave field needed for microwave discharge in air at atmospheric pressure.…”

“…14) and is qual- 1 Contour plots display only the upper half of the domain (i.e., r ≥ 0). 2 The flowfield was initially converged to steady state. The microwave pulse starts at t = 0 and ends at t = 1.01 µs.…”

On the Modelling of a Nonequilibrium Spherical Microwave Discharge at Atmospheric Pressure

“…The present work concerns with the modelling of a spherical microwave discharge at atmospheric pressure. Experiments show that a spatially localized plasma of spheroidal shape in a microwave discharge at atmospheric pressure can arise and stably exist as a stationary object sustained by a continuous power feed, in free space with microwave beam focusing [4][5][6][7], and without focusing of electromagnetic waves in metallic discharge chambers [8][9][10]. Numerical modelling of such a discharge has been done by many researchers on the assumption of a local thermal equilibrium (LTE) condition [1,11,[13][14][15].…”