Knowledge Bank

The laser magnetic resonance spectrum of the $\nu 2$ band of FCO has been observed throughout the region from 1040-1090 $cm-1$. The FCO was produced in the reaction of F+Co+Ar, where the F atoms are produced in a microwave discharge in either $CF4+Ar$ or $SF6+Ar$. FCO is also present in ``pure $CF4$” discharges, in which the necessary O atoms are apparently derived from the quartz cell walls. The majority of resonances occurred at low field ($<$2kG), but a few high field lines, including some with an uncharacteristic shape, were observed. Several lines exhibit clearly resolved doublet structure, most likely due to $\mathrm{<mrow\; data-mjx-texclass="ORD">19</mrow>}P$ hyperfine effects. In the previous diode laser $study1$, only a-type transitions were assigned. In contrast, our preliminary analysis indicates that both a-and b- type transitions occur in the LMR spectrum. $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}$K.Nagai, C. Yamada, Y Endo and E. Hirota, J. Mol. Spectrosc., 90, 249 (1981).