Characteristics of High-Current Electron Gun with Plasma Anode Based on Hybrid Discharge

Current Characteristics of a High-Current Electron Gun with Multi-Gap Initiation of Explosive Emission by Dielectric Surface Flashover

“…The cathode assembly includes an explosive emission cathode 1 in the form of a perforated copper disc, into the holes of which ceramic tubes 2 and copper electrodes 3 are inserted flush. The electrodes (69 pieces in total) are grounded through resistors 4 with a total resistance of 3 k (three resistors with a nominal value of 1 k in series; in [8] there were 2 resistors with the same nominal value). The addition of a third resistor to the circuit of each electrode was done to increase the electrical strength of the cathode assembly, which had previously decreased at a voltage above 20 kV.…”

“…A notable step in improving the operation of a highcurrent electron gun was our proposed technique of initiating explosive emission by embedding resistively decoupled arc plasma sources into the disk cathode [8]. A distinctive feature of this technique is that the power supply of both arc plasma sources and the accelerating gap of the electron gun is carried out from a single generator of high-voltage pulses.…”

“…The prospects of this cathode assembly are also due to the possibility of its use in the mode of a vacuum or gas-filled diode, due to the independence of the initiation of explosive emission from the accelerating gap and from its filling. In this paper, which is a continuation of the study of [8], the results obtained after the publication of the latter are presented to study the current characteristics of a plasma-filled high-current electron gun.…”