J. Phys. Colloques
Volume 40, Numéro C7, Juillet 1979XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
|Page(s)||C7-9 - C7-10|
J. Phys. Colloques 40 (1979) C7-9-C7-10
LINE RADIATION OF ARGON PLASMA IN EARLY AFTERGLOWJ.M. Labat, J. Vukicevic, O. Labat et S. Djenize.
Department of Physics and Meteorology and Institute of Physics, Beograd.
Spectral line radiation of a glow discharge argon plasma submited to the short electric pulse perturbation was reported by Labat et al(1). Set of spectral lines that predominantly originate from 4p to 4s levels transitions, after the perturbation have two clearly distinctive maxima. Initial rapid intensity peak during the perturbation pulse is caused by the direct excitation of atomic levels by electrons. Time the second intensity maximum appeared depends inverse proportional on the initial gas pressure and was same for all the lines observed. Decay of the second peak consists of three phases : initial rapid drop was followed by two exponential decays in succession, with time constants that suggests dissociative recombination being responsible for the 4p levels population.