DOUGLAS T. PETKIE, Department of Physics, Wright State University, Dayton OH 45435; PAUL HELMINGER, Department of Physics, University of South Alabama, Mobile, AL 36688; BRENDA P. WINNEWISSER, MANFRED WINNEWISSER AND FRANK C. DE LUCIA, Department of Physics, The Ohio State University, Columbus, OH 43210.
Resent results of millimeter and submillimeter wave rotational spectroscopy of the 5/2 9 states of nitric acid are used to simulate the complex structure of the 2 9 - 9 and 5 - 9 hot bands near 22µ. The comparison data were obtained with a high resolution Bruker FTIR at various pressures and a temperature of 297~K. The combination of the quality and resolution of the infrared data and the complexity of the spectra of these interacting states represents a stringent test for the simulation. It is shown that the agreement is very good and that this approach is generally advantageous.