Intensities, half-widths and shapes of spectral lines in the fundamental band of CO at low temperatures

Abstract

Intensities and half-widths of spectral lines in the R-branch of the C 12O 16 fundamental band have been measured at 200, 150, 99, and 81 K. The broadeners used were CO, N 2, O 2, and CO 2. The validity of some representative theories relevant to these line parameters have been examined in the light of the present results. We also discuss the shape of CO lines at low temperatures.