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Plasma-dynamic discharges in transverse supersonic air flows

“…Plasma-dynamic discharges with erosion mechanism of plasma formation [2][3][4][5][6][7][8][9][10][11][12][13][14] are observed under conditions of high-current (I = 10 to 10 000 kA) pulses, for example, during discharges of low-inductance (L Σ = 50 to 1000 nH) high-voltage (U = 2 to 50 kV) capacitors. The most universally employed structure of discharge assembly ( Fig.…”

“…5e). Note that almost all of the plasma formations identified above were observed previously under conditions of plasma-dynamic discharges in gas [3,11,17]. Therefore, the plasma-dynamic structure is in principle retained, although a different MPC structure was employed in the experiments (two or three times lower values of the ratio of the diameter of outer electrode to that of inner electrode), and much greater characteristic dimensionless (related to midsection) lengths of plasma jets were attained.…”

“…Because of compression of plasma on the symmetry axis in a shock wave, such a device is often referred to as "magnetoplasma compressor" (MPC). A plasma-dynamic discharge of MPC in gas passes through a number of stages, namely, breakdown, surface (arc) discharge, plasma-dynamic discharge with current layer, stage of double (gasdynamic and MHD) cumulation, stage of separated luminous bodies, quasi-vacuum plasma-dynamic discharge, and stage of turbulent relaxation [11,12,17]. The last two stages are of special interest from the standpoint of bulk ignition of supersonic flows of fuel-air mixture.…”