Abstract

Data on the glow discharge have been accumulated by photographic detection with an echelle spectrometer. Intensity, excitation temperature, and electron density results are reported for the cathode dark space, negative glow, and Faraday dark space regions of the plasma for three values of discharge current and five values of fill gas pressure. It is concluded that neither excitation temperature nor electron density is a useful descriptor of excitation conditions in low pressure plasmas. Excitation is interpreted in terms of an ionization-radiative recombination model, and intensity of argon atomic emission is shown to be correlated with the product of discharge current and argon ionization cross section.

Gas temperature measurements in weakly ionized glow discharges with filtered Rayleigh scattering

Azer P. Yalin, Yury Z. Ionikh, and Richard B. Miles
Appl. Opt. 41(18) 3753-3762 (2002)

Glow Discharge Resonance

A. B. Stewart
J. Opt. Soc. Am. 45(8) 651-657 (1955)

Cavity-enhanced Thomson scattering measurements of electron density and temperature in a hollow cathode discharge

Adam J. Friss and Azer P. Yalin
Opt. Lett. 43(21) 5343-5346 (2018)

Spatial Inhomogeneities in the Pulsed Glow Discharge

D. R. Pond and A. Garscadden
J. Opt. Soc. Am. 56(11) 1565-1567 (1966)

Helium Level Populations in a Glow Discharge*

William J. Condell
J. Opt. Soc. Am. 50(6) 610-616 (1960)