skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Auxiliary glow discharge in the trigger unit of a hollow-cathode thyratron

Abstract

Results from studies of a low-current glow discharge with a hollow cathode are presented. A specific feature of the discharge conditions was that a highly emissive tablet containing cesium carbonate was placed in the cathode cavity. In the absence of a tablet, the discharge ignition voltage was typically ≥3.5 kV, while the burning voltage was in the range of 500–600 V. The use of the tablet made it possible to decrease the ignition voltage to 280 V and maintain the discharge burning voltage at a level of about 130 V. A model of the current sustainment in a hollow-cathode discharge is proposed. Instead of the conventional secondary emission yield, the model uses a generalized emission yield that takes into account not only ion bombardment of the cathode, but also the emission current from an external source. The model is used to interpret the observed current−voltage characteristics. The results of calculations agree well with the experimental data. It is shown that, in some discharge modes, the external emission current from the cathode can reach 25% of the total discharge current.

Authors:
; ; ; ; ;  [1]
  1. Russian Academy of Sciences, Institute of High-Current Electronics, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22614091
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 42; Journal Issue: 8; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CESIUM CARBONATES; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; EXPERIMENTAL DATA; GLOW DISCHARGES; HOLLOW CATHODES; ION BEAMS; SECONDARY EMISSION; THERMONUCLEAR IGNITION; THYRATRONS

Citation Formats

Korolev, Yu. D., Landl, N. V., E-mail: landl@lnp.hcei.tsc.ru, Geyman, V. G., Frants, O. B., Shemyakin, I. A., and Nekhoroshev, V. O. Auxiliary glow discharge in the trigger unit of a hollow-cathode thyratron. United States: N. p., 2016. Web. doi:10.1134/S1063780X16080055.
Korolev, Yu. D., Landl, N. V., E-mail: landl@lnp.hcei.tsc.ru, Geyman, V. G., Frants, O. B., Shemyakin, I. A., & Nekhoroshev, V. O. Auxiliary glow discharge in the trigger unit of a hollow-cathode thyratron. United States. doi:10.1134/S1063780X16080055.
Korolev, Yu. D., Landl, N. V., E-mail: landl@lnp.hcei.tsc.ru, Geyman, V. G., Frants, O. B., Shemyakin, I. A., and Nekhoroshev, V. O. 2016. "Auxiliary glow discharge in the trigger unit of a hollow-cathode thyratron". United States. doi:10.1134/S1063780X16080055.
@article{osti_22614091,
title = {Auxiliary glow discharge in the trigger unit of a hollow-cathode thyratron},
author = {Korolev, Yu. D. and Landl, N. V., E-mail: landl@lnp.hcei.tsc.ru and Geyman, V. G. and Frants, O. B. and Shemyakin, I. A. and Nekhoroshev, V. O.},
abstractNote = {Results from studies of a low-current glow discharge with a hollow cathode are presented. A specific feature of the discharge conditions was that a highly emissive tablet containing cesium carbonate was placed in the cathode cavity. In the absence of a tablet, the discharge ignition voltage was typically ≥3.5 kV, while the burning voltage was in the range of 500–600 V. The use of the tablet made it possible to decrease the ignition voltage to 280 V and maintain the discharge burning voltage at a level of about 130 V. A model of the current sustainment in a hollow-cathode discharge is proposed. Instead of the conventional secondary emission yield, the model uses a generalized emission yield that takes into account not only ion bombardment of the cathode, but also the emission current from an external source. The model is used to interpret the observed current−voltage characteristics. The results of calculations agree well with the experimental data. It is shown that, in some discharge modes, the external emission current from the cathode can reach 25% of the total discharge current.},
doi = {10.1134/S1063780X16080055},
journal = {Plasma Physics Reports},
number = 8,
volume = 42,
place = {United States},
year = 2016,
month = 8
}