Ionic Complexes of Xe and C2H2 Produced by the Radiolysis of These Gases

Binary mixtures of acetylene and the noble gases were irradiated by 90 ev electrons at pressures up to 1.3 mm in the ionization chamber of a research mass spectrometer. Various proportions of the mixtures and a range of pressures were employed in this study. Ionic complexes, [XeC2H]+ and [XeC2H2]+, were observed in the C2H2–Xe system. The intensity ratio [XeC2H2]+/[XeC2H]+ increased linearly with increasing pressure. No ionic complexes were observed in the other mixtures. A series of reactions involving Xe+ is presented.