Investigation of Plasma Jets Generated by Quasi-Stationary Magneto-Plasma Compressor under the High Static Pressure

Experimental investigations of pla sma jets, generated by Magneto -Plasma Compressor (MPC), operated in the Residual Gas Regime (RGR) in air are performed. It was shown, that MPC in RGR allows to create plasma jets with high penetration ability both in to quiescent gas under the static press ures 30 -90 Torr and in neutral supersonic gas flows with M=2 and static pressure 20 Torr. The velocity of the plasma jet front propagation in quiescent air under the pressure 30 Torr is about 4,3 -4,5 km/s, the Mach number of this jet is estimated as 3,5 -4, 0. The life time of quasi -stationary state of generated plasma jets is about 75 -80 µs. For these experiments, the new construction of MPC was created. It uses the additional disch arge electrode for initiating an auxiliary discharge in the area of critical section of quasi -Laval nozzle of MPC. This discharge allows realize the stable operation of MPC in wide diapason of residual gas pressure with upper level 100 Torr and possibl y more . Results of the presented work demonstrate the possibilities of MPC genera ted jets in applied plasma dynamic s.