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Title: Effect of Doppler-shifted photons on subnanosecond breakdown in high-voltage pulse discharge

Abstract

The experiments in high-voltage open discharge in helium [1, 2] showed a controlled current growth rate of 500 A/(cm{sup 2}ns) for an applied voltage of 20 kV and gas pressure of 6 Torr. A kinetic model of the subnanosecond breakdown is developed to analyze the mechanism of current growth, which takes into account the kinetics of electrons, ions, fast atoms and photons with a Doppler shift (DS). DS photons appear in discharge due to collisions of heavy particles. Using particle in cell simulations, we show a critical role of DS photons in the electron emission from the cathode during the breakdown. Our experimental and calculation results show a decrease of the breakdown time with increasing gas pressure from 3 Torr to 16 Torr.

Authors:
 [1];  [1]; ;  [2]
  1. Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation)
  2. A.V. Rzhanov Institute of Semiconductor Physics, Novosibirsk 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
22608945
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1738; Journal Issue: 1; Conference: ICNAAM 2015: International conference of numerical analysis and applied mathematics 2015, Rhodes (Greece), 22-28 Sep 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMS; BREAKDOWN; COLLISIONS; CURRENTS; DOPPLER EFFECT; ELECTRIC POTENTIAL; ELECTRON EMISSION; ELECTRONS; HELIUM; IONS; PHOTONS; PULSES; SIMULATION

Citation Formats

Schweigert, I. V., George Washington University, Washington D.C. 20052, Alexandrov, A. L., Zakrevsky, Dm. E., and Bokhan, P. A. Effect of Doppler-shifted photons on subnanosecond breakdown in high-voltage pulse discharge. United States: N. p., 2016. Web. doi:10.1063/1.4951852.
Schweigert, I. V., George Washington University, Washington D.C. 20052, Alexandrov, A. L., Zakrevsky, Dm. E., & Bokhan, P. A. Effect of Doppler-shifted photons on subnanosecond breakdown in high-voltage pulse discharge. United States. doi:10.1063/1.4951852.
Schweigert, I. V., George Washington University, Washington D.C. 20052, Alexandrov, A. L., Zakrevsky, Dm. E., and Bokhan, P. A. Wed . "Effect of Doppler-shifted photons on subnanosecond breakdown in high-voltage pulse discharge". United States. doi:10.1063/1.4951852.
@article{osti_22608945,
title = {Effect of Doppler-shifted photons on subnanosecond breakdown in high-voltage pulse discharge},
author = {Schweigert, I. V. and George Washington University, Washington D.C. 20052 and Alexandrov, A. L. and Zakrevsky, Dm. E. and Bokhan, P. A.},
abstractNote = {The experiments in high-voltage open discharge in helium [1, 2] showed a controlled current growth rate of 500 A/(cm{sup 2}ns) for an applied voltage of 20 kV and gas pressure of 6 Torr. A kinetic model of the subnanosecond breakdown is developed to analyze the mechanism of current growth, which takes into account the kinetics of electrons, ions, fast atoms and photons with a Doppler shift (DS). DS photons appear in discharge due to collisions of heavy particles. Using particle in cell simulations, we show a critical role of DS photons in the electron emission from the cathode during the breakdown. Our experimental and calculation results show a decrease of the breakdown time with increasing gas pressure from 3 Torr to 16 Torr.},
doi = {10.1063/1.4951852},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1738,
place = {United States},
year = {2016},
month = {6}
}