LASER MAGNETIC RESONANCE SPECTROSCOPY AND HYPERFINE STRUCTURE IN THE $X^{2} \Pi$ STATE OF $CF^{\ast}$

Abstract

$^{1}$ Saykally, R. J. and Evenson, K. M., ``The Far-Infrared Laser Magnetic Resonance Spectrum of CF,'' 34th Symposium of Molecular Spectroscopy, Columbus, OH; June 1979; Paper TF-4. $^{*}$ Supported by NSF Grant $\#CHE-8007042.$Author Institution:In 1979 Saykally and $Evenson^{1}$ described laser magnetic resonance spectra of five transitions of CF in the $^{2}\Pi$ ground state. Here we report the analysis of both the $\pi$ and $\sigma$ spectra of the $J = 9/2 \rightarrow 11/2, \Omega = 3/2$ transition. These spectra were well-resolved and using nonlinear least squares analysis the following constants were determined: (MHz) \begin{eqnarray*} B_{0} &=& 42 192.74(38) \\ h &=& 665(11) \\ b &=& 240(30) \\ d &=& 586(420) \\ P_{0} &=& 367(28) \end{eqnarray*} From the hyperfine constants, the appropriate integrals over the unpaired electron distribution were determined. From there, a qualitative interpretation of the electronic structure of the ground state of CF can be obtained