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Information × Registration Number 0200U003759, 0198U005314 , R & D reports Title Physical processes in low-pressure discharges applied in plasma technology and gas-discharge electronic devices popup.stage_title Head Yegorenkov V., Registration Date 14-09-2000 Organization Kharkov National University named after V.N. Karazin popup.description2 Object of study - plasma behaviour in gas-discharge and electronic devices. Aim of study - establishment of instability conditions in the presence of the shear of the longitudinal velocity of electrons and refinement of the conditions for igniting RF doscharge, microwave discharge and combined discharge and application of these conditions for the determination of important characteristics of discharges. Methods of study - analytic and numerical calculations as well as experimental measurements. New equations have been obtained for describing the evolution of instability of interpenetrating flows of electrons that take into account the shear of the longitudinal velocity. The dispersion relation is derived for studying the available branches of oscillations and analyzed numerically. The conclusion is drawn about the important role of this instability in the process of plasma accumulation in such traps. A novel method of determining the electron-drift velocity in the RF field in low-pressure discharges is proposed. It is applied for determining the electron-drift velocity in hydrogen, air, argon, carbon tetrafluoride and sulphur hexafluoride. A modified criterion is proposed for breaking-down a microwave discharge in low-pressure gas that includes anisotropic diffusion of electrons. The ignition of microwave discharge in gases without and with affinity to electrons is considered. The ignition of the combined (microwave + weak DC electric fields) discharge is also treated. Product Description popup.authors popup.nrat_date 2020-04-03 Close