Temporal evolution of temperature and OH density produced by nanosecond repetitively pulsed discharges in water vapour at atmospheric pressure

F.P. Sainct 1 D. Lacoste 2 Mike Kirkpatrick 3 Emmanuel Odic 3 C. O. Laux 1
1 EM2C - Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion
2 LPCT - Laboratoire de Physico-Chimie Théorique
3 E3S - Supélec Sciences des Systèmes [Gif-sur-Yvette]
Abstract : We report on an experimental study of the temporal evolution of OH density and gas temperature in spark discharges created by nanosecond repetitively pulsed discharges in pure water vapour at 475 K and atmospheric pressure. The plasma was generated by 20 kV, 20 ns pulses, at a repetition frequency of 10 kHz. The temperature was measured during the discharge by optical emission spectroscopy of the second positive system of N2, and between two discharges by two-colour OH-planar laser induced fluorescence (OH-PLIF) using two pairs of rotational transitions. Between two successive discharges, the relative density of OH was measured by OH-PLIF and was found to decay very slowly, with a 1/e decay time of about 50 µs. With the use of a chemical kinetics model, the OH density was placed on an absolute scale.
Type de document :
Article dans une revue
Journal of Physics D: Applied Physics, IOP Publishing, 2014, 47 (7), pp.075204. 〈10.1088/0022-3727/47/7/075204〉
Liste complète des métadonnées
https://hal-supelec.archives-ouvertes.fr/hal-01073065
Contributeur : Stéphanie Douesnard <>
Soumis le : mercredi 8 octobre 2014 - 17:56:29
Dernière modification le : jeudi 14 juin 2018 - 17:22:03

Identifiants

Collections

SUPELEC | LPCT | PARISTECH | ESPCI | EM2C | INC-CNRS | PSL | EM2C-PLASMAS | UPMC | GEEPS | ECO2

Citation

F.P. Sainct, D. Lacoste, Mike Kirkpatrick, Emmanuel Odic, C. O. Laux. Temporal evolution of temperature and OH density produced by nanosecond repetitively pulsed discharges in water vapour at atmospheric pressure. Journal of Physics D: Applied Physics, IOP Publishing, 2014, 47 (7), pp.075204. 〈10.1088/0022-3727/47/7/075204〉. 〈hal-01073065〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

211

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD