Broadening and attenuation of UV laser ablation plumes in background gases

S. Amoruso, B. Toftmann, Jørgen Schou

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    The expansion of a laser-induced silver plume in a background gas has been studied in a variety of gases ranging from helium, oxygen and argon to xenon. We have measured the angular distribution of the total deposit of silver on an array of quartz crystal microbalances as well as the time-of-flight distribution with a Langmuir probe. The angular distribution broadens for all gases except for a minor pressure range for the helium background gas, in which a distinct plume narrowing occurs. The behavior of the collected, ablated silver atoms integrated over the full hemisphere is similar for all gases. This integral decreases strongly above a characteristic pressure, which depends on the specific gas. The ion time-of-flight signal shows a clear plume splitting into a fast and a slow component except for the ablation plume in a helium gas. (c) 2005 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalApplied Surface Science
    Volume248
    Issue number1-4
    Pages (from-to)323-328
    ISSN0169-4332
    DOIs
    Publication statusPublished - 2005
    Event4. International conference on photo-excited processes and applications -
    Duration: 1 Jan 2004 → …

    Conference

    Conference4. International conference on photo-excited processes and applications
    Period01/01/2004 → …

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