Abstract

A tunable diode laser spectrometer has been used to determine pressure broadening coefficients due to collision with the foreign gases air, H2, O2 and N2 in the ν4 and ν6 bands of H2CO between 9 and 11 μm. Absolute line strengths for twenty-eight transitions have also been determined. The broadening coefficients are very similar to theoretical literature values in the cases of air, N2, and O2. The H2–H2CO values are in good agreement with earlier experimental millimeter wave results.

© 1987 Optical Society of America

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