Abstract

A system has been designed which will rapidly and conveniently measure the electron temperature in a hollow cathode discharge. The measurement system is based on the floating double probe technique. Preliminary results obtained with this system indicate that the electron temperature depends on lamp current, fill gas pressure, and cathode material. These results are compared to those found in the literature for low pressure, microwave, and radiofrequency discharges. The electron temperatures measured in the three types of discharges have similar values, but the different discharges show strikingly different dependences on plasma composition.

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)

Temperature Measurement in a Hollow-Cathode Discharge*

Richard Schoen and John R. Holmes
J. Opt. Soc. Am. 44(6) 502-503 (1954)

Optogalvanic effect in a hollow cathode discharge with nonlaser sources

Charles T. Apel, Richard A. Keller, Edward F. Zalewski, and Rolf Engleman
Appl. Opt. 21(8) 1465-1467 (1982)

Spectroscopic Studies of Ionization in a Hollow-Cathode Discharge

Kenneth B. Mitchell
J. Opt. Soc. Am. 51(8) 846-853 (1961)

Mechanistic study of the optogalvanic effect in a hollow-cathode discharge

C. Drèze, Y. Demers, and J. M. Gagné
J. Opt. Soc. Am. 72(7) 912-917 (1982)