Infrared emission from photo-excited gaseous benzene: detection with a new home-made spectrometer

G. Féraud; Y. Carpentier; T. Pino; Y. Longval; E. Dartois; T. Chamaillé; R. Vasquez; J. Vincent; P. Parneix; C. Falvo; Ph. Bréchignac

doi:10.1051/eas/1258064

All issues

Volume 58 (2012)

EAS Publications Series, 58 (2012) 379-384

Abstract

Open Access

Issue		EAS Publications Series Volume 58, 2012 ECLA - European Conference on Laboratory Astrophysics


Page(s)		379 - 384
DOI		https://doi.org/10.1051/eas/1258064
Published online		13 February 2013

European Conference on Laboratory Astrophysics - ECLA
C. Stehlé, C. Joblin and L. d’Hendecourt (eds)
EAS Publications Series, 58 (2012) 379-384

Infrared emission from photo-excited gaseous benzene: detection with a new home-made spectrometer

G. Féraud¹, Y. Carpentier², T. Pino¹, Y. Longval³, E. Dartois³, T. Chamaillé¹, R. Vasquez¹, J. Vincent¹, P. Parneix¹, C. Falvo¹ and Ph. Bréchignac¹

¹ Institut des Sciences Moléculaires d’Orsay, Université Paris-Sud 11, France
² Laboratoire de Physique des Lasers, Atomes et Molécules, Université de Lille 1, France
³ Institut d’Astrophysique Spatiale, Atomes et Molécules, Université Paris-Sud 11, France

Abstract

The infrared fluorescence decay and the dispersed emission spectrum are presented for gaseous benzene following 193 nm laser excitation. They were measured with FIREFLY (Fluorescence in the InfraRed from Excited FLYing molecules), a new home-made spectrometer. Redshift and redtail in the CH stretch emission spectra (3.3 μm region) demonstrate that anharmonicity plays a key role when dealing with high internal energies, as it is the case in the interstellar medium.