Diagnostics of atmospheric pressure microplasma with a liquid electrode
- 199 Downloads
A rf atmospheric pressure microplasma (APMP) in contact with a liquid electrode is characterized by an optical emission spectroscopy (OES) and a liquid chromatography. The results show that the solution conductivity is the essence for determining the APMP properties rather than the solution pH value. A liquid acidification observed during the APMP treatment is ascribed to the salvation of nitrogen related species created by the APMP. In addition, a typical two-sheath structure of the APMP is revealed by the spatial distribution of OES along the plasma volume. The estimated electron density of the APMP is as high as 1014–1015 cm-3.
- 1.A. Gavrukov, I. Shakhova, A. Imanov, O. Petrov, N. Vorona, V. Fortov, Phys. Lett. A 378, 336 (2005)Google Scholar
- 8.T. Cserfalvi, P. Mezei, Fresenius J. Anal. Chem. 355, 813 (1996)Google Scholar
- 10.J.M. Mermet, in Inductively Coupled Plasma Emission Spectroscopy, edited by P. Boumans (Wiley-Interscience, Amsterdam, 1987), Chap. XGoogle Scholar
- 13.H.R. Griem, in Spectral Line Broadening by Plasmas (Academic Press, New York, 1974), p. 316Google Scholar