ABSTRACT
The electrical characteristics of the discharge (see, e.g. [1-6]) mean in the first place characteristics such as the voltage in the discharge (at the electrodes of the gas discharge tube (GDT)) Ud (t), the current through the discharge Id (t), active resistance Rd (t) and inductance Ld of the discharge. For the formation of general ideas about the characteristics of these discharges in self-contained pulsed and repetitively pulsed (pulsed-periodic) lasers we take a look at the results of [2, 3], in which the studies were conducted with self-heated copper vapour lasers with an unsealed tube (Fig. 2.1) similar to those described in [7,8], with a GDT with a diameter of 1.2 cm and 70 cm long and with the excitation circuit (Fig. 2.2 a), which is one of the variants of the
circuit with direct discharge of the storage capacitor to the discharge gap and with resonant recharging of the storage capacitor (see Fig. 2.2). These circuits are sometimes called circuits with a choke charge of the storage capacitor, a diode in the presence of the charging circuit (Fig. 2.2 c) – circuits with a diode-choke charge storage capacitor. Buffer gases [2,3] were He, Ne and Ar at pressures from 2 to 14 kPa. Voltage Ur at the rectifier output ranged from 3 to 6 kV, and the pulse repetition rate from 5 to 15 kHz. The thyratron switch was TGI1-
2000/35. The charging inductance Lch and inductance LS, shunting the discharge, were respectively 0.8 H and 7 µH. The electrical capacitance of the storage capacitor CS was 3.3 nF.
