Plasma Propagation Speed and Electron Temperature in Slow Electron Energy Non-thermal Atmospheric Pressure Indirect-Plasma Jet

Author

Suanpoot, Pradoong ; Gook-Hee Han ; Sornsakdanuphap, Jirapong ; Han Sup Uhm ; Guangsup Cho ; Eun Ha Choi

Author_Institution

Maejo Univ. Phrae Campus, Phrae, Thailand

Volume

43

Issue

7

fYear

2015

fDate

Jul-15

Firstpage

2207

Lastpage

2211

Abstract

Space- and time-resolved discharge-images from a nonthermal atmospheric-pressure indirect-plasma jet have been observed using a high-speed single-frame camera to investigate the electron temperature. The propagation velocity of the indirect Ar-plasma along the plasma column has been shown to be on the order of 10⁴ m/s, and that corresponds to an ion acoustic velocity on the order of 10² m/s. Plasma has been generated by varying input discharge voltages from 2.0 to 4.0 kV at a driving frequency of 40 kHz. Particularly, the average electron temperature in slow electron energy nonthermal atmospheric-pressure indirect-plasma jet has been found to be about 0.3 eV.

Keywords

argon; discharges (electric); plasma diagnostics; plasma ion acoustic waves; plasma jets; plasma sources; plasma temperature; Ar; average electron temperature; frequency 40 kHz; high-speed single-frame camera; indirect argon-plasma propagation velocity; input discharge voltage variation; ion acoustic velocity; plasma column; pressure 1 atm; slow electron energy nonthermal atmospheric pressure indirect-plasma jet; space-resolved discharge-images; time-resolved discharge-images; velocity 102 m/s; velocity 104 m/s; voltage 2.0 kV to 4.0 kV; Cameras; Discharges (electric); Electrodes; Plasma measurements; Plasma temperature; Temperature measurement; Ar plasma; electron temperature; indirect-plasma jet; nonthermal plasma; plasma propagation speed; plasma propagation speed.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2015.2439058

Filename

7132790