Molecular emissions in sonoluminescence spectra of water sonicated under Ar-based gas mixtures.
Fiche publication
Date publication
juin 2019
Journal
Ultrasonics sonochemistry
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BELMONTE Thierry
Tous les auteurs :
Pflieger R, Fayard E, Noel C, Nikitenko SI, Belmonte T
Lien Pubmed
Résumé
Sonoluminescence (SL) spectroscopy is one of the very few ways to study the plasma formed in solutions submitted to ultrasound. Unfortunately, up to now only very limited emission bands were reported in SL spectra of aqueous solutions, moreover broad and badly resolved. It is shown here that by adding some N and/or CO in Ar, new molecular emissions (CN, N and CO) can be observed and that for some of them rovibronic temperatures can be derived. The paramount importance of Stark broadening in these emissions is underlined, together with the need for data on Stark parameters for molecular emissions.
Mots clés
Emission spectra, Plasma, Sonochemistry, Sonoluminescence, Ultrasound
Référence
Ultrason Sonochem. 2019 Jun 11;58:104637