Back to Search
Start Over
Effects of discharge voltage waveform on the discharge characteristics in a helium atmospheric plasma jet.
- Source :
-
Journal of Applied Physics . 2015, Vol. 117 Issue 15, p153301-1-153301-6. 6p. 2 Diagrams, 1 Chart, 9 Graphs. - Publication Year :
- 2015
-
Abstract
- We present here an analysis of the discharge characteristics of a He plasma jet operating under three different types of applied voltage waveform: (a) a μs-pulse voltage waveform with a slow voltage rise time, (b) ns-pulse, and (c) rectangular voltage waveforms with fast voltage rise time. Optical emission measurements show that the application of a voltage with a fast voltage rise time induces rapid discharge growth and, consequently, produces an abundance of energetic electrons, which in turn leads to high optical emission from the O atoms. We also estimate the optical emission efficiency of the O atom (ηo), which corresponds roughly to the production efficiency of the reactive O species. ηo increases with increasing applied voltage, and the highest value of ηo is obtained in the shortest pulse discharge, which was ignited by a ns-pulse voltage waveform with a fast voltage rise time and short pulse width. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 117
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 102243196
- Full Text :
- https://doi.org/10.1063/1.4918546