Analyses de matériaux provenant de la décomposition du benzène liquide au cours de l’interaction avec un faisceau laser pulsé

Materials have been obtained by decomposition of liquid benzene, owing to the acoustic shock wave induced by the stimulated Brillouin and Raman scatterings excited by a pulsed laser beam 〚1〛. First, amorphous carbon containing particles of graphite and chaoite have been characterized by X-ray diffraction; second, after distillation of the treated benzene and heating under vacuum, a solid residue with a yellowish colour is obtained and characterized by means of X-ray diffraction, mass spectrometry, and infrared, visible and ultraviolet spectroscopies. In this last material, there are several constituents: in a main part, monohydrogenated benzene cycles, along with compounds of naphtalene type, and, in a small part, polycyclic aromatic hydrocarbons.