Spectroscopic study of high current discharges
- 1 April 1971
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 59 (4) , 573-578
- https://doi.org/10.1109/proc.1971.8217
Abstract
A high current arc was developed between carbon electrodes in H2, SF6, He, Ar, and air at an initial pressure higher than 1 atm. The current peak was above 5 kA and the duration of the current was 250 µs. The temporal and spatial changes of plasma parameters were measured by time-resolved spectrography and high-speed framing camera. The electron density of the plasma was estimated from the Stark broadening of the lines, Hβ, C II 4267 Å, He I 4471 Å, and He I 5876 Å. Our observations show the following: The arc space is divided into two regions, the bright narrow core and the broad outer flame. The electron density of the core is estimated to be of the order of 1018cm-3and an electron temperature of the order of 104°K is obtained at current peak. Even after current zero, the electron density keeps the order of 1017cm-3regardless of the kind of gas.Keywords
This publication has 3 references indexed in Scilit:
- Spectroscopic investigation of channel initiation in hydrogen sparksBritish Journal of Applied Physics, 1967
- Starkeffekt-Verbreiterung der Balmer-Linien bei gro en ElektronendichtenThe European Physical Journal A, 1954
- Elektronendichte und Temperatur in der Säule des HochstromkohlebogensThe European Physical Journal A, 1953