Spectroscopic Diagnostic of a KR Dielectric Barrier Discharge, Comparison and Interpretation of Chemical Process

Abstract

This work presents an electric, spectroscopic and kinetic study of a Dielectric Barrier Discharge in pure Krypton. An experimental work and theoretical study of the emission in the pure krypton lamp excited by dielectric barrier discharge is developed <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> . The discharge development in an homogeneous model approach using extended kinetic schemes is simulated. Stable dielectric barrier discharges were achieved between two identical insulated electrodes separated by 2 mm gap containing pure krypton at pressure from 129 to 460 mbar. The discharge was powered with a sinusoidal power supply at frequencies from 10 to 50 kHz. Ultraviolet, visible and infrared emission were emitted by the discharge, but only visible and IR were measured. Electrical and emission characteristics of the DBD were studied together. In order to understand the emission process a theoretical interpretation of the results is given by describing the chemical properties of the lamp in the IR range. IR emission and a detailed study of kinetics allow us to follow the population of metastable excited states of Krypton in (Kr*( <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0,2</inf> )). A comparison between experimental and modeling results will be presented.