ON THE ENERGY DEPENDENCE OF THE ZEEMAN AND HYPERFINE PARAMETERS IN THE $A^{2}\Sigma^{+}$ STATE OF OH AND OD
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Date
2003
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Ohio State University
Abstract
We report quantum beat studies of the energy dependence of the Zeeman parameters in the $A^{2}\Sigma^{+}$ state of OH and OD, and the nuclear hyperfine parameters of $OD(A^{2}\Sigma^{+})$. In contrast to a previous study, we find that the sign and magnitude of the anisotropic g-factor $g_{\ell}$ for $\nu^{\prime} = 0$ is consistent with that expected from Curl's relationship. However, at higher energies $g_{\ell}$ changes sign, and possible explanations for this trend will be examined. The magnetic and electric quadrupole hyperfine constants were determined for $OD(A^{2}\Sigma^{+},\nu^{\prime} = 0-3$), and the constants for $\nu^{\prime} = 2,3$ are reported here for the first time to our knowledge. The derived values are consistent with available ab initio calculations.
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Author Institution: Department of Physics and Engineering Technologies, Bloomsburg University; Department of Chemistry, Marquette University