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Title: Self-pulsing of hollow cathode discharge in various gases

Abstract

In this paper, we investigate the self-pulsing phenomenon of cavity discharge in a cylindrical hollow cathode in various gases including argon, helium, nitrogen, oxygen, and air. The current-voltage characteristics of the cavity discharge, the waveforms of the self-pulsing current and voltage as well as the repetition frequency were measured. The results show that the pulsing frequency ranges from a few to tens kilohertz and depends on the averaged current and the pressure in all gases. The pulsing frequency will increase with the averaged current and decrease with the pressure. The rising time of the current pulse is nearly constant in a given gas or mixture. The self-pulsing does not depend on the external ballast but is affected significantly by the external capacitor in parallel with the discharge cell. The low-current self-pulsing in hollow cathode discharge is the mode transition between Townsend and glow discharges. It can be described by the charging-discharging process of an equivalent circuit consisting of capacitors and resistors.

Authors:
; ;  [1]
  1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081 (China)
Publication Date:
OSTI Identifier:
22304101
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; ARGON; CAPACITORS; CURRENTS; ELECTRIC POTENTIAL; EQUIVALENT CIRCUITS; GLOW DISCHARGES; HELIUM; HOLLOW CATHODES; KHZ RANGE; PULSE RISE TIME; PULSES; RESISTORS; WAVE FORMS

Citation Formats

Qin, Y., He, F., E-mail: hefeng@bit.edu.cn, Jiang, X. X., Ouyang, J. T., E-mail: jtouyang@bit.edu.cn, and Xie, K. Self-pulsing of hollow cathode discharge in various gases. United States: N. p., 2014. Web. doi:10.1063/1.4885640.
Qin, Y., He, F., E-mail: hefeng@bit.edu.cn, Jiang, X. X., Ouyang, J. T., E-mail: jtouyang@bit.edu.cn, & Xie, K. Self-pulsing of hollow cathode discharge in various gases. United States. https://doi.org/10.1063/1.4885640
Qin, Y., He, F., E-mail: hefeng@bit.edu.cn, Jiang, X. X., Ouyang, J. T., E-mail: jtouyang@bit.edu.cn, and Xie, K. 2014. "Self-pulsing of hollow cathode discharge in various gases". United States. https://doi.org/10.1063/1.4885640.
@article{osti_22304101,
title = {Self-pulsing of hollow cathode discharge in various gases},
author = {Qin, Y. and He, F., E-mail: hefeng@bit.edu.cn and Jiang, X. X. and Ouyang, J. T., E-mail: jtouyang@bit.edu.cn and Xie, K.},
abstractNote = {In this paper, we investigate the self-pulsing phenomenon of cavity discharge in a cylindrical hollow cathode in various gases including argon, helium, nitrogen, oxygen, and air. The current-voltage characteristics of the cavity discharge, the waveforms of the self-pulsing current and voltage as well as the repetition frequency were measured. The results show that the pulsing frequency ranges from a few to tens kilohertz and depends on the averaged current and the pressure in all gases. The pulsing frequency will increase with the averaged current and decrease with the pressure. The rising time of the current pulse is nearly constant in a given gas or mixture. The self-pulsing does not depend on the external ballast but is affected significantly by the external capacitor in parallel with the discharge cell. The low-current self-pulsing in hollow cathode discharge is the mode transition between Townsend and glow discharges. It can be described by the charging-discharging process of an equivalent circuit consisting of capacitors and resistors.},
doi = {10.1063/1.4885640},
url = {https://www.osti.gov/biblio/22304101}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 7,
volume = 21,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2014},
month = {Tue Jul 15 00:00:00 EDT 2014}
}