Distribution of OH within silent discharge plasma reactors

Author

Coogan, J.J. ; Sappey, A.D.

Author_Institution

Div. of Chem. Sci. & Technol., Los Alamos Nat. Lab., NM, USA

Volume

24

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

91

Lastpage

92

Abstract

Barrier discharges in humid air generate large quantities of OH and are well suited for the treatment of gas-based pollutants. In order to understand and optimize the formation and utilization of OH, we have imaged the spatial and temporal distribution of the OH radical with resolution of 40 μm and 100 ns. Using a flowing mix of Ar/O₂/H₂O (78.5/20/1.5), we have found that OH exists only within the 85-μm radius channel formed by the transient microdischarge. At modest power densities of 0.1 W/cm², over l0⁶/cm²/s of these small filaments quickly fill the entire reactor volume

Keywords

air pollution control; discharges (electric); plasma applications; plasma devices; plasma diagnostics; OH distribution; barrier discharges; gas-based pollutants treatment; humid air; microdischarge; silent discharge plasma reactors; spatial distribution; temporal distribution; Air pollution; Argon; Charge coupled devices; Chemical technology; Dielectrics; Electrodes; Electrons; Inductors; Optical filters; Plasmas;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.491706

Filename

491706