title: Far-infrared spectroscopy of small polycyclic aromatic hydrocarbons.
abstract: Both experimental and theoretical spectroscopic studies on small gas phase polycyclic aromatic hydrocarbons in the far-infrared spectral region are reported. The experimental set-up based on thermal emission and Fourier transform far infrared analysis led to the detection of relatively broad vibrational bands, unresolved in rotation, representative of each molecule. Detailed theoretical investigations were performed, including both ab initio calculations and spectral simulations. For the majority of the samples, this study provides the first detection of the vibrational modes associated with the skeleton motions.
authors.affiliation: Laboratoire de Photophysique Moléculaire (membre de la Fédération Lumière Matière), CNRS, Université de Paris-Sud, Bât. 210, F-91405, Orsay Cedex, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Pirali
authors.forename: Nguyen-Thi
authors.initials: NT
authors.lastname: Van-Oanh
authors.forename: Pascal
authors.initials: P
authors.lastname: Parneix
authors.forename: Michel
authors.initials: M
authors.lastname: Vervloet
authors.forename: Philippe
authors.initials: P
authors.lastname: Bréchignac