An argon arc source for UV radiometry initiated by laser-induced gas breakdown

Abstract

By utilizing arc discharge, we have constructed an argon arc radiation source for ultraviolet (UV) radiometry, and have studied how to initiate the source using laser-induced gas breakdown (LIGB) without any contamination or degradation of its components. Investigation of the source of the arc discharge characteristics and spectral radiance characteristics of the arc yielded the optimum operating conditions. The spectral radiance of the arc source was stable to within 0.3%, and could be adjusted by controlling the arc current and argon pressure during normal operation. © 2005 IOP Publishing Ltd.