HIGH-RESOLUTION FOURIER-TRANSFORM SPECTROSCOPY OF THE VIBRATION-ROTATION SPECTRUM OF THE OD RADICAL

The infrared spectrum of the deuterated hydroxyl radical OD has been measured with a Fourier transform spectrometer between 1850 and 9000 cm-1. The source, a deuterium atom ozone diffusion flame, was designed to study the chemiluminescent excitation of the vibration-rotation energy levels of the OD radical. Twenty-one bands were observed, 6 bands in the DELTAupsilon = 1 sequence, 9 bands in the DELTAupsilon = 2 sequence, and 6 bands in the DELTAupsilon = 3 sequence. A global nonlinear least-squares fit, utilizing the unique perturber approximation, of 2112 lines to 76 molecular parameters yielded a standard deviation of 0.007 cm-1 including 35 parameters for the previously unobserved upsilon = 6-10 vibrational states. (C) 1994 Academic Press, Inc.