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 - Santa Fe, USA
Duration: 1 Jan 2010 → …

Conference

ConferenceInternational High-Power Laser Ablation Conference
CitySanta Fe, USA
Period01/01/2010 → …

Keywords

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

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