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2d Modeling of Laser Induced Plasma Expansion

Published online by Cambridge University Press:  15 February 2011

H.C. Le
Affiliation:
Laboratoire Interdisciplinaire Ablation Laser et Applications IRPHE, UMR 138 CNRS, URA 783 CNRS, Faculte des Sciences de Luminy
D. Zeitoun
Affiliation:
163 Avenue de Luminy, Case 901, Marseille 13288, FRANCEIUSTI, UMR 139 CNRS, Universite de Provence, FRANCE
Y. Burtschell
Affiliation:
163 Avenue de Luminy, Case 901, Marseille 13288, FRANCEIUSTI, UMR 139 CNRS, Universite de Provence, FRANCE
W. Marine
Affiliation:
Laboratoire Interdisciplinaire Ablation Laser et Applications IRPHE, UMR 138 CNRS, URA 783 CNRS, Faculte des Sciences de Luminy
M. Sentís
Affiliation:
Laboratoire Interdisciplinaire Ablation Laser et Applications IRPHE, UMR 138 CNRS, URA 783 CNRS, Faculte des Sciences de Luminy
R.W. Dreyus
Affiliation:
Laboratoire Interdisciplinaire Ablation Laser et Applications IRPHE, UMR 138 CNRS, URA 783 CNRS, Faculte des Sciences de Luminy
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Abstract

An axisymmetric two-dimensional modeling of plasma expansion in background gas is carried out to provide a better understanding of pulsed laser deposition (PLD) processes. This model takes into account the plasma plume dynamics just after the laser ablation pulse. It is shown that hydrodynamic behaviour and thermal relaxation of the plasma are strongly dependent on the nature and the pressure of background gas. In good agreement with experimental results backward movement of particles is clearly identified at a late expansion stage (≥ 2 μs).

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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References

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