TY - JOUR

T1 - Effect of High-Voltage Electrode Potential Bias on the Breakdown Induced by Ionization Wave in Discharge Tube

AU - Meshchanov, A. V.

AU - Ionikh, Yu Z.

AU - Akishev, Yu S.

N1 - Funding Information: The work was supported by the Russian Foundation for Basic Research (project no. 19-02-00288). Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/11

Y1 - 2020/11

N2 - Abstract—: An experimental study has been done of the bias effect of the active (high-voltage) electrode potential on the breakdown characteristics in a discharge tube 15 mm in diameter, filled with neon, argon, or their mixture (3 : 1) at a pressure of ~1 Torr. The bias of the potential is carried out by parallel connection to the electrode with an additional constant voltage or additional pulses with an amplitude less than the voltage for maintaining self-sustained discharge. In this case, a change in the breakdown voltage, the velocity of the pre-breakdown ionization wave, and the brightness of radiation from its front is observed. In particular, the breakdown voltage can increase up to 1.5–2 times, and this state of the discharge gap can be maintained for tens of minutes. The observed effects are assumed to be caused by the appearance of a charge on the tube wall and a change in its potential near the electrode, which affect the characteristics of the primary breakdown between the electrode and the wall and, in turn, the processes of discharge ignition. The mechanisms of appearance of the surface charge on the wall when feeding a bias voltage to electrode are investigated.

AB - Abstract—: An experimental study has been done of the bias effect of the active (high-voltage) electrode potential on the breakdown characteristics in a discharge tube 15 mm in diameter, filled with neon, argon, or their mixture (3 : 1) at a pressure of ~1 Torr. The bias of the potential is carried out by parallel connection to the electrode with an additional constant voltage or additional pulses with an amplitude less than the voltage for maintaining self-sustained discharge. In this case, a change in the breakdown voltage, the velocity of the pre-breakdown ionization wave, and the brightness of radiation from its front is observed. In particular, the breakdown voltage can increase up to 1.5–2 times, and this state of the discharge gap can be maintained for tens of minutes. The observed effects are assumed to be caused by the appearance of a charge on the tube wall and a change in its potential near the electrode, which affect the characteristics of the primary breakdown between the electrode and the wall and, in turn, the processes of discharge ignition. The mechanisms of appearance of the surface charge on the wall when feeding a bias voltage to electrode are investigated.

KW - argon

KW - breakdown potential

KW - discharge tube

KW - electrical breakdown

KW - glow discharge

KW - ionization wave

KW - neon

KW - wall charge

KW - LONG

KW - ARGON

UR - http://www.scopus.com/inward/record.url?scp=85096125356&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/69ab385a-25fe-3788-bc7f-c43e4a7979bd/

U2 - 10.1134/S1063780X20110057

DO - 10.1134/S1063780X20110057

M3 - Article

AN - SCOPUS:85096125356

VL - 46

SP - 1124

EP - 1136

JO - Plasma Physics Reports

JF - Plasma Physics Reports

SN - 1063-780X

IS - 11

ER -