MILLIMETER WAVE ABSORPTION AND FAR INFRARED LASER MAGNETIC RESONANCE SPECTROSCOPY OF $FO_{2}$*

$^{\ast}$ Research performed in part under contract DE-ACO2-76CH00016 with the U.S. Department of Energy. $^{1}$ A.R.W. McKellar, J.B. Burkholder, A. Sinha and C.J. Howard, J. Molec. Spectrosc. 125, 288 (1987).Author Institution: Chemistry Dept, Brookhaven National Laboratory; Universite de Lille I, Laboratoire de Spectroscopie Hertzienne du C.N.R.S.; Physical Chemistry Laboratory, Lensfield RoadWe have recorded many absorptions due to the $FO_{2}$ radical at frequencies between 130 and 270 GHz. The spectra are all weak, however we have assigned them to fine and hyperfine split components of a-dipole transitions between levels with $6<N<15$ and $0<K