Spectroscopic Study of Argon DC Glow Discharge

Author

Garamoon, Abdou A. ; Samir, Ahmed ; Elakshar, Farouk Fahmy ; Nosair, A. ; Kotp, Eizaldeen F.

Author_Institution

Phys. Dept., Al-Azhar Univ., Cairo

Volume

35

Issue

1

fYear

2007

Firstpage

1

Lastpage

6

Abstract

In this paper, emission spectra of both positive column (PC) and negative glow (NG) regions of the dc glow discharge have been measured at different pressures and currents. The intensity of the lines in the NG is in the order of five times of that corresponding lines´ intensity in the PC region. It is found that the line intensity increases linearly with the discharge current, while it increases as P^alpha with the gas pressure. The electron temperature T_e has been estimated using the line-to-line-intensity-ratio technique. It is found that T_e derived by this technique generally decreases with the pressure. Also, T_e in NG region is about 3/2 of that in the PC

Keywords

argon; glow discharges; plasma diagnostics; plasma temperature; positive column; Ar; argon DC glow discharge; discharge current; electron temperature; emission spectra; gas pressure; line-to-line-intensity-ratio technique; positive column; Argon; Electrons; Glow discharges; Optical scattering; Plasma diagnostics; Plasma measurements; Plasma properties; Plasma temperature; Probes; Spectroscopy; Diagnostics; electron temperature; gas discharge; plasma; probes; spectroscopy;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2006.889270

Filename

4089092