Ablation plume dynamics in a background gas: [invited]

Salvatore Amoruso (Invited author), Jørgen Schou (Invited author), James G. Lunney (Invited author)

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    Abstract

    The expansion of a plume in a background gas of pressure comparable to that used in pulsed laser deposition (PLD) has been analyzed in terms of the model of Predtechensky and Mayorov (PM). This approach gives a relatively clear and simple description of the essential hydrodynamics during the expansion. The model also leads to an insightful treatment of the stopping behavior in dimensionless units for plumes and background gases of different atomic/molecular masses. The energetics of the plume dynamics can also be treated with this model. Experimental time-of-flight data of silver ions in a neon background gas show a fair agreement with predictions from the PM-model. Finally we discuss the validity of the model, if the work done by the pressure of the background gas is neglected.
    Original languageEnglish
    Title of host publicationHPLA
    Publication date2010
    Publication statusPublished - 2010
    EventInternational High-Power Laser Ablation Conference 2010 - Santa Fe, United States
    Duration: 18 Apr 201022 Apr 2010

    Conference

    ConferenceInternational High-Power Laser Ablation Conference 2010
    Country/TerritoryUnited States
    CitySanta Fe
    Period18/04/201022/04/2010

    Keywords

    • shock wave
    • laser plasma
    • pulsed laser deposition
    • laser ablation
    • PLD

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