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Indexed by:期刊论文

Date of Publication:2009-04-01

Journal:SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

Included Journals:SCIE、EI、PubMed

Volume:72

Issue:3

Page Number:460-464

ISSN No.:1386-1425

Key Words:Pre-ionization; Ultraviolet lamp; Emission spectra; Dielectric barrier discharge; Atmospheric pressure

Abstract:In this paper, ultraviolet radiation produced by the ultraviolet lamp is employed to supply pre-ionization for the dielectric barrier discharge in N-2 or air at atmospheric pressure. The effect of the ultraviolet preionization on improving the uniformity of the dielectric barrier discharge is investigated experimentally. The atmospheric pressure glow discharge of the large area (270 mm x 120 mm) is obtained successfully via the ultraviolet pre-ionization in atmospheric DBD in N-2 when the gas gap decrease to 3 mm. Based on the emission spectra, the mechanism which ultraviolet pre-ionization improves the uniformity of the dielectric barrier discharge is discussed. (c) 2008 Elsevier B.V. All rights reserved.