THE MILLIMETER AND SUBMILLIMETER-WAVE SPECTRUM OF THE $\nu_{5}$ AND $2\nu_{9}$ VIBRATIONAL STATES OF NITRIC ACID: $HNO_{3}$
Loading...
Date
1993
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The millimeter-wave spectrum of nitric acid ($HNO_{3}$) in its $\nu_{5}$ and $2\nu_{9}$ vibrational states has been studied. Data were taken using a TWT based broadband spectrometer. The $\nu_{5}$ and $2\nu_{9}$ states exhibit a large perturbation from the ordinary Watson Hamiltonian due to a Fermi interaction between the energy levels. The results of an analysis will be presented in which the data from both states were fit simultaneously to a Hamiltonian in which the Fermi interaction is taken into account. The data from both states include a wide range of quantum numbers on both sides of the perturbation and a large number of data points in regions where the perturbation interaction is very large. We find that the transitions which show the largest perturbation can be accurately predicted with the Hamiltonian used for the analysis. The results of this analysis will be compared with the results of previous studies in the infrared frequency region.
Description
Author Institution: Department of Physics, The Ohio State University; Department of Physics, University of South Alabama