Thomson scattering diagnostics of atmospheric plasmas in contact with ionic liquids

Abstract

Laser Thomson scattering has been applied to a nonequilibrium atmospheric plasma in contact with an ionic liquid to measure both electron density (ne) and electron temperature (Te). The discharge plasma was produced between a needle and a plane ionic-liquid electrode separated by a 3 mm gap. In comparison with a conventional metal electrode, distinct differences were found in spatial profiles of ne and Te of the plasma produced with the ionic-liquid electrode.