Photofragmentation of the fluorene cation: I. New experimental procedure using sequential multiphoton absorption.
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.
Van-Oanh
Nguyen-Thi
NT
Laboratoire de Photophysique Moléculaire, CNRS, Fédération de Recherche Lumière Matière, Bât 210, Université Paris-Sud XI, Orsay, France. vanoanh@lcp.u-psud.fr
Désesquelles
Pierre
P
Douin
Stéphane
S
Bréchignac
Philippe
P
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
D002412:Cations; D005449:Fluorenes