Eur. Phys. J. D (2014) 68: 90
https://doi.org/10.1140/epjd/e2014-40823-2

Regular Article

Time-dependent characteristics of the dielectric barrier discharge in Xe-Cl₂ mixture and kinetics of the XeCl^∗ molecules

Kyrgyz-Russian Slavic University, Kievskaya str. 44, 720021 Bishkek, Kyrgyzstan

^a e-mail: savtaeva@krsu.edu.kg

Received: 23 December 2013
Received in final form: 20 February 2014
Published online: 23 April 2014

Abstract

Time-dependent characteristics of the dielectric barrier discharge in Xe-Cl₂ mixture at chlorine concentration of 0.5% and kinetic processes governing the generation of XeCl^∗ molecules are studied using the 1D fluid model. It is shown that at low voltage amplitude (5 kV) a one-peak mode of the discharge is observed and at high voltage amplitude (7 kV) a two-peak mode of the discharge appears. The radiation power of the XeCl^∗ band increases with amplitude of the supply voltage. It is demonstrated that the harpoon reaction Xe^∗ + Cl₂ → XeCl^∗ + Cl provides the greatest contribution into generation of XeCl^∗ exciplex molecules during short current pulses and the ion-ion recombination Xe⁺₂ + Cl^- → XeCl^* + Xe provides the greatest contribution during afterglow. Quenching of XeCl^∗ molecules is a result of the radiative decay XeCl^∗ → Xe + Cl + hv (308 nm). During current spike the great contribution into quenching of XeCl^∗ provides also the dissociative ionization e + XeCl^∗ → Xe⁺ + Cl + 2e.