Rare gas binary mixtures under electron bombardment are characterized by strong emissions that have been traced to radiative transitions of diatomic heteronuclear ions (e.g.,(ArXej*) .The kinetic processes governing heteronuclear ion formation and decay are not well understood,but the more Important of these processes should be elucidated by time resolved spectroscopy. In particular, since heteronuclear rare gas ions are known to be only weakly bound, their characteristic emissions are expected to be greatly affected by changes in temperature. Under this assumption,an experiment was devised to study the (ArXe)+ 32nm emission under time resolved conditions for different temperatures and mixtures of the gas. The experiment necessitated the design and installation of a temperature variable gas cell. Although the apparatus allows one to vary temperature over a wider range,data,thus far, were taken between 24BK and 348K. In this range, preliminary time dependent spectra have been observed to vary significantly as a function of temperature.