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Short-pulse laser ablation of materials at high intensities: Influence of plasma effects

Published online by Cambridge University Press:  23 March 2010

Dimitri Batani
Dimitri Batani*
Affiliation:
Dipartimento di Fisica “G. Occhialini”, Università di Milano Bicocca, Milano, Italy
*
Address correspondence and reprint requests to: Dimitri Batani, Dipartimento di Fisica “G. Occhialini”, Università di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy. E-mail: [email protected]
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Abstract

The paper is devoted to the study of plasma effects, which are present in laser ablation at relatively high intensity (I ≥ 1012 W/cm2). We start from the classical “two temperature model” of laser ablation (“cold solid approximation”) and we extend it to higher intensities where laser-induced heating and laser-induced changes in the background material become relevant. The new model is also compared to experimental results on laser ablation of solid targets from short pulse lasers at high intensities (up to 1014 W/cm2). Finally, we consider the effects on laser-ablation of laser-generated fast electrons.

Keywords

Electron relaxationFast electronsIon fluxLaser plasma generationLaser powerPlasma heatingPlasma interactionTarget heating
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 2 , June 2010 , pp. 235 - 244
Copyright
Copyright © Cambridge University Press 2010

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