Expansion of a laser-produced silver plume in light background gases

S. Amoruso, B. Toftmann, Jørgen Schou

    Research output: Contribution to journalJournal articleResearchpeer-review


    The expansion of a silver ablation plume in a helium and an argon background gas has been studied over the pressure range 10(-6) to 1 mbar. The angular distribution of silver atoms deposited on an array of quartz-crystal microbalances as well as time-of-flight signals of the plume ions in both gases were measured. There is a distinct sharpening of the angular distribution of the ablated silver atoms in the helium gas within a narrow range from 0.2 to 0.4 mbar. In contrast, the width of the angular distribution in the argon gas increases throughout the interval. The time-of-flight signals show a peak of fast ions which gradually merges into a more complex structure.
    Original languageEnglish
    JournalApplied Physics A: Materials Science & Processing
    Issue number4-6
    Pages (from-to)1311-1314
    Publication statusPublished - 2004


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