The temperature dependence of collision‐induced absorption by oxygen near 6 μm

Coefficients for oxygen absorption in the infrared induced by collisions with O2 and N2 are reported over the range 1400–1800 cm−1 and 225–356 K. These coefficients are used to calculate the absorption for O2 in air as a function of temperature and wavenumber, and comparisons are made with previous determinations. In addition, structured absorption features superimposed on the broad collision-induced absorption band, which were observed at all temperatures studied, are interpreted in terms of the presence of (O2)2 and O2-N2 van der Waals molecules.

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