title: Optical properties of synthetic carbon nanoparticles as model of cosmic dust.
abstract: Carbon nanoparticles synthesised by laser pyrolysis of small hydrocarbons are deposited at low energy on a silicon substrate. Infrared spectroscopy of the as-formed films are studied as a function of the synthesis parameters and post-treatments, such as annealing and heavy ion irradiation. Correlation between infrared spectroscopy and multiscale organisation of the samples is made through transmission electron microscopy, including image analysis. Changes in infrared spectra are analysed in terms of the carbon network building. The relevance of the results to model the structure and spectroscopy of carbon dust in the carbon-rich circumstellar media is discussed.
authors.affiliation: SPAM, CEA-Saclay, Gif/Yvette, France. creynaud@drecam.cea.fr
authors.forename: C
authors.initials: C
authors.lastname: Reynaud
authors.forename: O
authors.initials: O
authors.lastname: Guillois
authors.forename: N
authors.initials: N
authors.lastname: Herlin-Boime
authors.forename: J N
authors.initials: JN
authors.lastname: Rouzaud
authors.forename: A
authors.initials: A
authors.lastname: Galvez
authors.forename: C
authors.initials: C
authors.lastname: Clinard
authors.forename: E
authors.initials: E
authors.lastname: Balanzat
authors.forename: J M
authors.initials: JM
authors.lastname: Ramillon
mesh_terms: D055580:Astronomical Phenomena; D001256:Astronomy; D002244:Carbon / Q000737:chemistry*; D019443:Cosmic Dust / Q000032:analysis*; D008956:Models, Chemical; D010316:Particle Size; D018561:Space Simulation; D013055:Spectrophotometry, Infrared / Q000379:methods*
chemical_list: D019443:Cosmic Dust; D002244:Carbon