Low-current hollow-cathode discharge in a trigger unit of a cold cathode thyratron

12th International Conference on Gas Discharge Plasmas and Their Applications

Landl, N.V.^1,2,3 ; Korolev, Y.D.^1,2,3 ; Frants, O.B.^1,2 ; Geyman, V.G.^1 ; Bolotov, A.V.^1

Institute of High Current Electronics SB RAS, Tomsk

634055, Russia^1

Tomsk State University, Tomsk

634050, Russia^2

Tomsk Polytechnic University, Tomsk

634050, Russia^3

关键词: Burning voltage;    Discharge initiation;    Effect of cathode;    Emission current;    High emissivity;    Hollow cathode discharge;    Hollow cathode glow discharge;    Trigger units;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012050/pdf
DOI  :  10.1088/1742-6596/652/1/012050

来源: IOP

【 摘 要 】

The paper deals with the investigations of the effect of cathode emissivity on the regimes of low-current hollow-cathode glow discharge. It is shown that an increase in the emissivity due to the so-called high-emissivity tablet allows the essential decrease in the discharge initiation voltage and the discharge burning voltage. The model of current sustaining for the hollow-cathode discharge, which takes into account the external emission current has been developed. On basis of the model, the current-voltage characteristics of the discharge have been interpreted.