MEASUREMENTS OF 1-0 BAND OF CARBON MONOXIDE AT TEMPERATURES BETWEEN 11 AND 296 KELVINS

Author Institution: Department of Physics, Astronomy and Geophysics, Connecticut College; Department of Physics, College of William and Mary; Atmospheric Sciences Division, MS401A, NASA Langley Research Center; Department of Physics, The Ohio State UniversityWe measured the R (O) absorption line in pure CO between room temperature and 30 Kelvins, using an unstabilized lead salt laser. At temperatures below 30 Kelvins we could measure CO absorption only in a gaseous helium bath using the collisional cooling technique described by De Lucia and co-workers. We will describe the results of our attempts to simultaneously fit the line intensity, self and foreign broadening coefficients as well as their temperature dependence