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Measurements of quenching rate coefficients of YO molecule in A2Π1/2, A2Π3/2, and B2Σ+ states by helium, argon and oxygen from a solar induced fluorescence technique

Published online by Cambridge University Press:  07 December 2007

J. M. Badie ,
L. Cassan  and
B. Granier
J. M. Badie
Affiliation:
PROMES-CNRS, Procédés Matériaux et Énergie Solaire, 7 Rue du Four Solaire, 66120 Font-Romeu, France
L. Cassan
Affiliation:
PROMES-CNRS, Procédés Matériaux et Énergie Solaire, 7 Rue du Four Solaire, 66120 Font-Romeu, France
B. Granier*
Affiliation:
PROMES-CNRS, Procédés Matériaux et Énergie Solaire, 7 Rue du Four Solaire, 66120 Font-Romeu, France
*
granier@promes.cnrs.fr
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Abstract

We measured in function of helium, argon, and oxygen gas pressure, the evolution of the intensities of the fluorescence spectra of YO molecule issuing from a liquid drop of yttrium oxide melted at the focus of a solar furnace. From this evolution and in a simplified approach assuming the independency of the three molecular systems of YO (A2Π1/2-X2Σ+, A2Π3/2-X2Σ+, B2Σ+-X2Σ+) we deduced, through the analysis of Stern-Volmer plots, a mean quenching rate coefficients of this molecule in these states by the above mentioned gases.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 41 , Issue 1 , January 2008 , pp. 87 - 90
Copyright
© EDP Sciences, 2007

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