Abstract

The plasma jet, as adapted for the spectrochemical excitation of solutions and used with a photoelectric spectrometer to measure light intensities, provided coefficients of variation of one to two percent <i>(1).</i> A significant portion of the error was attributed to discharge instability. The swirling flow of gas surrounding the jet "flame" at the cathode forces the arc to make electrical contact to the cathode by an arc streamer. It is this streamer moving randomly over the cathode surface which makes the discharge unstable. It appeared that stabilization of the electrical path to give excitation position stability would be necessary to improve the precision of the plasma jet as an excitation source <i>(2).</i>

Jet-Controlled Arc: I, Excitation of Second Spectra

Kenneth H. Thygesen and Frank L. Moore
Appl. Opt. 2(6) 635-637 (1963)

Jet-Controlled Arc II: Excitation of Third Spectra

F. L. Moore, K. H. Thygesen, C. C. Derwin, and M. E. Eward
Appl. Opt. 3(1) 93-95 (1964)

Demonstration of a diode-pumped plasma jet-type rare gas laser

Rui Wang, Zining Yang, Qingshan Liu, Kai Han, Hongyan Wang, and Xiaojun Xu
Opt. Lett. 47(13) 3279-3282 (2022)

Instability mechanism and discharge regime diagnosis of microthrusters based on plasma properties

Fangyi Wang, Shaohua Zhang, Yan Liu, and Xilong Yu
Appl. Opt. 60(4) 1021-1030 (2021)

Ar₂ excimer emission from a pulsed-discharge-excited pulsed supersonic gas jet

J. E. Tucker, M. F. Masters, B. L. Wexler, and S. K. Searles
Opt. Lett. 17(4) 288-290 (1992)