SAAD, Rawad; L'HERMITE, Daniel; BOUSQUET, Bruno

doi:10.1016/j.sab.2014.09.017

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

http://creativecommons.org/licenses/by-nc/

SAAD, Rawad
Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire [LANIE]

L'HERMITE, Daniel
Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire [LANIE]

BOUSQUET, Bruno
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

Langue

Article de revue

Ce document a été publié dans

Spectrochimica Acta Part B: Atomic Spectroscopy. 2014-11-01, vol. 101, p. 330-334

Elsevier

Résumé en anglais

The temporal evolution of the laser induced breakdown (LIBS) signal of a pure aluminum sample was studied under nitrogen and air atmospheres. In addition to the usual decrease of signal due to plasma cooling, unexpected temporal evolutions were observed for a spectral lines of aluminum, which revealed the existence of collisional energy transfer effects. Furthermore, molecular bands of AlN and AlO were observed in the LIBS spectra, indicating recombination of aluminum with the ambient gas. Within the experimental conditions reported in this study, both collisional energy transfer and recombination processes occurred around 1.5 μs after the laser shot. This highlights the possible influence of collisional and chemical effects inside the plasma that can play a role on LIBS signals.< Réduire

Mots clés en anglais

LIBS LASER-INDUCED BREAKDOWN SPECTROSCOPY

Molecular recombination

Collisional energy transfert

Plasma temperature

Temporal evolution

Métadonnées

Licence d’utilisation du document

Unexpected temporal evolution of atomic spectral lines of aluminum in a laser induced breakdown spectroscopy experiment

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche