Analyse Globale du Spectre de 12CH4 dans la Région 0–4800 cm-1

Statut Actuel et Perspectives Concernant l'Analyse Raie par Raie du Spectre du Méthane

Global Frequency and Infrared Intensity Analysis of 12CH4 in the 0–4800 cm-1 Region

The present status of methane spectroscopy for planetary applications

International audience

Theoretical Modelling of the Methane Absorption Spectrum for Planetary Applications

Theoretical background and preliminary results of the global modeling of the lower three polyads of PH3 covering the 3 to 10 µm spectral region

A recent study reported in 2006 provided an empirical database of PH3 (line positions and intensities) in the 3 μm region. The study was based experimentally on FTIR spectra recorded at Kitt Peak at various optical densities and theoretically on single state fits of features assigned using the ground state combination differences method. The need for a complete analysis of the octad was underlined in order to account for the complex interactions which is expecially important for intensity modeling. The polyad pattern of the PH3 molecule presents close similarities with those of spherical top molecules (like CH4), although the symmetry degeneracies are reduced. The simultaneous analysis of t…

Etat de l'Art de la Modélisation Théorique du Spectre d'Absorption du Méthane, pour les Applications en Planétologie

Global Frequency and Infrared Intensity Analysis of 12CH4 Lines in the 900–4800 cm-1 Region