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An upper limit for the absorption cross section of the oxygen transition
Author(s) -
Simonaitis R.,
Leu M. T.
Publication year - 1985
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl012i012p00829
Subject(s) - absorption cross section , absorption (acoustics) , wavelength , spectrometer , grating , detection limit , materials science , optics , analytical chemistry (journal) , absorption spectroscopy , cross section (physics) , atomic physics , physics , chemistry , chromatography , quantum mechanics
A search was made for absorption by O 2 (a¹Δ g ) in the wavelength region 190–290 nm. Measurements were done at 10 nm intervals with a grating spectrometer having a bandwidth of 9.0 nm. No absorption above the detection limit of 0.02–0.03% absorption could be observed for O 2 (a¹Δ g ) concentrations of (4–7) × 10 15 cm −3 . An upper limit of 8×10 −22 cm² for the absorption cross section of O 2 (a¹Δ g ) in this wavelength region was calculated.