15min:

J. A. PHILLIPS, Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, WI 54702.; J. J. ORLANDO, G. TYNDALL, Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado 80303.; AND V. VAIDA, Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado, 80309.

Intensities for several OH vibrational overtone bands have been measured for vapor phase methanol, ethanol, and isopropanol. The trends in the intensities as a function of excitation level have been modeled by two empirical approaches, yielding intensity predictions for the higher overtone transitions, up to 7 (OH). These methods were also applied to recent HNO₃ overtone measurements, resulting in new intensity predictions for higher, photochemically-active overtone bands, which are compared with theoretical estimates.