CHARACTERISTICS OF THE COMBINED DISHARGE IN AVERAGE PRESSURE GAS

Abstract
Creating high-power CO₂-laeers by a combined excitation way that stimulated further improving of this method and further research of discharge characteriatics is perspective [1,2,3,4,]The combination of both the pulse self-maintained and the main semi-self-maintained discharges are used in the combined excitation methode. The self-maintained diacharge is produced by a high-voltage short time pulse source to create plasma with an electron density required. The main semi-self-maintain discharge requires lower voltage on the electrodes. Usually the large inductor being used as a decoupling element prohibits shunting of a high voltage pulse circuit by the main discharge source [2,4]. The presence of the decoupling elements makes the discharge characteristics worse. There is our concept in which two high voltage pulae sources are used, their own currents flowing in the opposite direction. It enabled us to get rid of the decoupling elements and to csrry on the energetic data researches of the combine discharge at a high input energy density into nitrogen of an average pressure. The circuit scheme of this device is shown in fig. 1.