Secondary Ion Mass Spectrometry of Small-Molecule Solids at Cryogenic Temperatures. V. Oxygen

摘要

Positive secondary ion mass spectra of neat solid O2 and O2 diluted with argon at 15-20K were measured as a function of the nature and energy of the primary ions (He+ , Ar+, Kr+, 0.5-4.0 keV). With He+, the spectrum of solid O2 is dominated by O2+ and O+ peaks, with Ar+ and Kr+, it is dominated by an intense cluster series O+3n+2, n = 0,1,2... .