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Application of the digital imaging technique using IMACON 790 camera for compression plasma flows investigation
Gordana Kekić Ivan Dojčinović
The results of application of the technique for digital image acquisition using an ultra-high-speed camera on the magnetoplasma compressor discharge investigation are shown. The principal working regimes of quasi-stationary compression plasma flows at low and high pressures were studied. Temporal development of discharge: breakdown, shock wave formation and compression plasma flow and plasma quenching were analysed. The basic plasma parameters: velocity, plasma flow dimensions and discharge phases duration were measured. The velocity of compression plasma flow microstructures was determined from the streak records in hydrogen, argon and nitrogen within the 10 - 50 000 Pa pressure range. The highest plasma velocities 100-120 km/s, were measured in hydrogen at 1000 Pa.
Key words: ultra-high-speed camera, digital image acquisition, velocity measurement, plasma, magnetoplasma compressor.
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