Abstract

The spatial variation of the spectral width of the Ar 7<i>d</i>[5/2]3-4<i>p</i>[3/2]2 transition inside the cathode fall region of hollow cathode discharges was examined by laser optogalvanic spectroscopy at various discharge currents and gas pressures. A close yet complicated correlation with the spatial distribution of the electric field was found to be present, and attempts were made to acquire and summarize qualitative understanding of the observation. The spectral width at the cathode surface, Δω_<i>c</i> (in cm⁻¹), was found to be related to the corresponding Stark shift, Δ<i>v</i>_<i>c</i> (in cm⁻¹), by Δω_<i>c</i> = (0.0021 ± 0.0002)Δ<i>v</i>_<i>c</i> in cm⁻¹.

Analysis of Hollow-Cathode-Discharge-Excited Ar i, Ar ii, and Au i Spectral-Line Profiles Measured with a Fabry–Perot Interferometer*

W. C. Kreye and F. L. Roesler
J. Opt. Soc. Am. 60(8) 1100-1108 (1970)

Interferometric Studies of Wide-Lorentzian-Width Ar ii and Ne ii Spectral Lines Excited in a Hollow-Cathode Discharge*

W. C. Kreye
J. Opt. Soc. Am. 61(6) 833-835 (1971)

Interferometric analyses of Ne ii and Ar ii spectral lines from a hollow-cathode discharge*

W. C. Kreye
J. Opt. Soc. Am. 64(2) 186-196 (1974)

Monte Carlo simulation of the cathode fall region of a CO₂ laser glow discharge for studying the influence of magnetic fields on instability growth

R. Razdan, C. E. Capjack, and H. J. J. Seguin
Appl. Opt. 25(17) 2915-2925 (1986)

Optogalvanic study of doubly ionized uranium (U iii) in a hollow-cathode discharge

K. N. Piyakis and J. M. Gagné
J. Opt. Soc. Am. B 6(1) 7-10 (1989)