Atmospheric pressure plasma diagnostics by OES, CRDS and TALIF

G. D. Stancu, F. Kaddouri, Deanna Lacoste, C. O. Laux

Research output: Contribution to journalArticlepeer-review

171 Scopus citations

Abstract

Nanosecond repetitively pulsed (NRP) discharges were used to generate atmospheric pressure plasmas in air or nitrogen preheated at 1000 K. In order to understand the physico-chemical mechanisms that control the number densities of active species, in situ optical diagnostic techniques were developed. The ground state of atomic oxygen was measured by two-photon absorption laser induced fluorescence (TALIF), the density of N2(A) was measured by cavity ring down spectroscopy (CRDS) and the densities of N2(B) and N2(C) were measured by optical emission spectroscopy (OES). Temporally and spatially resolved density measurements were performed in the main operating regimes of the NRP discharge, namely the diffuse and filamentary regimes. The diagnostic techniques and associated challenges are presented and the effects of these discharges on the chemistry are discussed.

Original languageEnglish (US)
Article number124002
JournalJournal of Physics D: Applied Physics
Volume43
Issue number12
DOIs
StatePublished - Mar 23 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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