Laboratory studies of the mid and near infrared collision-induced absorption bands of O2 are reviewed, with an emphasis on the 6.4 m and 1.27 m bands and on Ar, O2, N2, and CO2 collision partners. These absorption bands are important in the radiative balance of the atmosphere and contribute to the background absorption in remote-sensing radiometers. Also discussed is the ripple structure observed on the 6.4 m band, which is absent from the 1.27 m band. This structure has been attributed to dimers or to line mixing involving the weakly allowed electric-quadrupole absorptions. Finally, the strong enhancement of the collision-induced absorption by CO2 collisions is shown.
Proceedings Title: NATO Advanced Research Workshop on Weakly Interacting Molecular Pairs: Unconventional Absorbers of Radiation in the Atmosphere |||Kluwer Academic Publishers
Conference Dates: April 29-May 2, 2002
Conference Location: Abbaye De Fontevraud, FR
Conference Title: NATO Science Series
Pub Type: Conferences
air, atmospheric absorption, collision-induced absorption, continuum absorption, FTIR, infrared intensity, infrared spectroscopy, nitrogen, oxygen