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Caractérisation expérimentale de plasmas induits par impulsion laser en régime de double impulsion

Authors: Favre, Aurélien; Morel, Vincent; Grisolia, C.; Bultel, Arnaud;

Caractérisation expérimentale de plasmas induits par impulsion laser en régime de double impulsion

Abstract

La spectroscopie optique d’émission sur plasma induit par laser (LIBS, acronyme de Laser-Induced Breakdown Spectroscopy) est aujourd’hui une puissante méthode d’analyse de composition multi-élémentaire. Ce procédé utilisant une source laser impulsionnelle permet en effet de déterminer une quantité importante d’informations relatives au plasma généré dans l’environnement cible (gaz, liquide ou solide). Néanmoins, cette méthode peut s’avérer insuffisante dans certains cas de figures relatifs par exemple à l’étude de milieux où les espèces sondées sont très minoritaires, à la détection d’éléments dont les transitions sont mal connues ou encore pour la mesure d’espèces dont l’énergie des niveaux hauts des transitions est particulièrement élevée. C’est dans ce contexte qu’utiliser une seconde impulsion laser peut s’avérer intéressant afin d’augmenter de manière significative la température du plasma pour diminuer le seuil de détection. Le présent article explore les modifications des caractéristiques du plasma apportées par l’absorption de cette seconde impulsion. 

Country
France
Keywords

530.44 plasmas, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], plasma, LIBS, double impulsion, picoseconde, aluminium, tungstène, tokamak, ITER, [PHYS] Physics [physics]

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
hybrid