Comparison of a He and an Ar Cold RF Atmospheric-Pressure Plasma Jet Operating in Continuous and Pulsed RF Modes

Author

Hofmann, Sven ; Bruggeman, Peter

Author_Institution

Dept. of Appl. Phys., Eindhoven Univ. of Technol., Eindhoven, Netherlands

Volume

39

Issue

11

fYear

2011

Firstpage

2332

Lastpage

2333

Abstract

In this paper, the absorbed power, power density, and absolute UV emission of a radio-frequency jet working in continuous and pulsed modes are measured. The plasma source is a plasma needle which operates under atmospheric pressure with helium or argon in air. Photographs of the discharges were taken to present the effect of radial contraction of the argon plasma for the highest power densities investigated. The contraction is explained by the electron-ion-dissociative-recombination-dominated losses in the argon case.

Keywords

argon; helium; high-frequency discharges; plasma density; plasma diagnostics; plasma instability; plasma jets; Ar; He; absolute UV emission; absorbed power; argon plasma; atmospheric-pressure plasma jet; continuous RF modes; discharges; electron-ion-dissociative-recombination-dominated losses; photographs; plasma needle; plasma source; power densities; power density; pulsed RF modes; radial contraction; radio-frequency jet working; Argon; Helium; Needles; Plasma measurements; Plasma temperature; Radio frequency; Atmospheric-pressure plasma (APP) jet; radial contraction;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2160810

Filename

5961636