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Fourier Transform Spectroscopy of the O2 Herzberg Bands. III. Absorption Cross Sections of the Collision-Induced Bands and of the Herzberg Continuum

✍ Scribed by S. Fally; A.C. Vandaele; M. Carleer; C. Hermans; A. Jenouvrier; M.-F. Mérienne; B. Coquart; R. Colin

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
196 KB
Volume
204
Category
Article
ISSN
0022-2852

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✦ Synopsis

Absorption spectra of molecular oxygen were measured in the laboratory under temperature and pressure conditions prevailing in the Earth's atmosphere. Spectra of pure O 2 , O 2 ϩ N 2 , and O 2 ϩ Ar were recorded in the 41 700 to 33 000 cm Ϫ1 region (240 -300 nm) at a maximal optical path difference of 0.45 cm using a Fourier transform spectrometer and a multiple reflection gas cell. The different components of the spectra, namely the discrete bands of the three Herzberg systems, the Herzberg continuum, and the collision-induced diffuse Wulf bands, were separated. The contribution of the Herzberg bands was first subtracted using the line parameters determined previously [A.

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