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Journal of Applied Physics / Volume 111 / Issue 2 / ARTICLES / Plasmas and Electrical Discharges

J. Appl. Phys. 111, 023304 (2012); http://dx.doi.org/10.1063/1.3677951 (10 pages)

Spark discharge formation in an inhomogeneous electric field under conditions of runaway electron generation

Tao Shao (邵涛)1,2, Victor F. Tarasenko3, Cheng Zhang (章程)1,2, Mikhail I. Lomaev3, Dmitrii A. Sorokin3, Ping Yan (严萍)1,2, Andrei V. Kozyrev3, and Evgeni Kh. Baksht3

1Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
2Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China
3Institute of High Current Electronics, Russian Academy of Sciences, Tomsk 634055, Russia

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(Received 7 October 2011; accepted 17 December 2011; published online 23 January 2012)

In this article we report on work where the formation of a spark in nanosecond high-voltage discharges was studied in nitrogen, nitrogen-methane mixtures, and air at increased pressures under the conditions of runaway electron generation. Voltage pulses of amplitude ∼90 and ∼250 kV were applied to a point-to-plane gap with a planar anode and a cathode of small curvature radius. Cathode spots appeared early in the discharge, within ∼200 ps of a corona discharge at high rate of rise of the voltage (∼5 × 1014 V/s) across centimeter point-to-plane gap spacing. The spark leader that bridged the point-to-plane gap propagated from the planar anode with cathode spots and a voltage pulse rise time of less than 1 ns. The discharge from diffuse clouds took the form of diffuse jets with increasing pulse repetition rate, thus achieving the accumulation effect in a repetitively pulsed discharge. Characteristic emission spectra are presented for spark diffuse and corona discharges.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL EQUIPMENT AND PROCEDURE
  3. DIFFUSE DISCHARGES IN PULSED AND REPETITIVE PULSED MODES
  4. SPARK DISCHARGES IN PULSED AND REPETITIVE PULSED MODES
  5. DISCUSSION OF THE RESULTS
  6. ON THE FORMATION OF A SPARK DISCHARGE IN THE REPETITIVE PULSED MODE
  7. CONCLUSION

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KEYWORDS, PACS, and IPC

Keywords

air gaps, corona, gas mixtures, nitrogen, organic compounds, plasma jets, plasma transport processes, sparks

PACS

  • 52.80.Mg

    Arcs; sparks; lightning; atmospheric electricity

  • 52.80.Hc

    Glow; corona

  • 52.25.Fi

    Transport properties

  • 52.75.-d

    Plasma devices

  • 52.25.Os

    Emission, absorption, and scattering of electromagnetic radiation

International Patent Classification (IPC)

  • H01T

    Spark gaps; Overvoltage arresters using spark gaps; Sparking plugs; Corona devices; Generating ions to be introduced into non-enclosed gases

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3677951

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    T. Shao, C. Zhang, Z. Niu, P. Yan, V. F. Tarasenko, E. Kh. Baksht, I. D. Kostyrya, and V. Shutko, J. Appl. Phys. 109, 083306 (2011)JAPIAU000109000008083306000001.

    S. Yatom, V. Vekselman, J. Z. Gleizer, and Ya. E. Krasik, J. Appl. Phys. 109, 073312 (2011)JAPIAU000109000007073312000001.

    T. Shao, V. F. Tarasenko, C. Zhang, Yu. V. Shutko, and P. Yan, Phys. Plasmas 18, 053502 (2011)PHPAEN000018000005053502000001.

    T. Shao, C. Zhang, Z. Niu, P. Yan, V. F. Tarasenko, E. Kh. Baksht, A. G. Burahenko, and V. Shutko, Appl. Phys. Lett. 98, 021503 (2011)APPLAB000098000002021503000001.

    A. I. Palmer, Appl. Phys. Lett. 25, 138 (1974)APPLAB000025000003000138000001.


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