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The European Physical Journal D

, Volume 54, Issue 2, pp 425–432 | Cite as

Spectroscopic investigations of back-corona discharge on fly-ash layer

  • T. CzechEmail author
  • M. Lackowski
  • A. Krupa
  • A. T. Sobczyk
  • A. Jaworek
  • E. Rajch
Topical issue: 23rd Symposium on Plasma Physics and Technology

Abstract

Results of spectroscopic investigations of back discharge generated in point-plane electrode geometry in ambient air at atmospheric pressure are presented in the paper. The back discharge was generated for the plate electrode covered with fly ash layer. To characterize the discharge process, the emission spectra were measured for the back discharges and compared with those obtained for corona discharge generated in the same electrode configuration but with dielectric layer removed. The measurements have shown that spectral lines emitted by the back discharge depend on the forms of discharge and the discharge current. From comparison of spectral lines of back and normal discharges an effect of the dust layer on discharge morphology can be determined. In normal conditions, the emission spectra are dominated by atmospheric components (molecular nitrogen, atomic oxygen and nitrogen) but for back-discharges, additional lines due to elements and compounds in fly ash were also identified. The studies of back discharge were undertaken because this type of discharge decreases the collection efficiency in electrostatic precipitators.

PACS

52.80.Hc Glow; corona 32.30.Jc Visible and ultraviolet spectra 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • T. Czech
    • 1
    Email author
  • M. Lackowski
    • 1
  • A. Krupa
    • 1
  • A. T. Sobczyk
    • 1
  • A. Jaworek
    • 2
  • E. Rajch
    • 2
  1. 1.Institute of Fluid Flow Machinery, Polish Academy of ScienceGdańskPoland
  2. 2.Institute of Physics, Pomeranian AcademySłupskPoland

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