title: Photofragmentation of the fluorene cation: I. New experimental procedure using sequential multiphoton absorption.
abstract: The hydrogen-loss channel, induced by sequential multiphoton absorption, of the vapor-phase fluorene cation was investigated using a supersonic molecular beam and a time-of-flight mass spectrometer. The fluorene cation was prepared by resonantly enhanced multiphoton ionization. The ultimate goal of this experiment is the determination of the evolution of the dissociation rate constant in a wide energy range. In this paper, we give a description of the original experimental procedure, show that the absorption process is non-Poissonian, and determine the absolute photon absorption cross section.
authors.affiliation: Laboratoire de Photophysique Moléculaire, CNRS, Fédération de Recherche Lumière Matière, Bât 210, Université Paris-Sud XI, Orsay, France. vanoanh@lcp.u-psud.fr
authors.forename: Nguyen-Thi
authors.initials: NT
authors.lastname: Van-Oanh
authors.forename: Pierre
authors.initials: P
authors.lastname: Désesquelles
authors.forename: Stéphane
authors.initials: S
authors.lastname: Douin
authors.forename: Philippe
authors.initials: P
authors.lastname: Bréchignac
mesh_terms: D002412:Cations / Q000737:chemistry; D005449:Fluorenes / Q000737:chemistry* / Q000528:radiation effects; D007834:Lasers; D013058:Mass Spectrometry / Q000379:methods; D008958:Models, Molecular; D015394:Molecular Structure; D010777:Photochemistry; D017785:Photons; D012680:Sensitivity and Specificity; D013997:Time Factors
chemical_list: D002412:Cations; D005449:Fluorenes