Knowledge Bank

The IR spectrum of the $\nu 5$ band of $CDF3$ has been obtained by using a diode laser heterodyne spectrometer. Hundreds of lines in the neighborhood of the $10R(J)CO2$ laser Lines have been measured to Within 6 MHz accuracy. The interesting feature of $K=3$ splitting is observable in the branch. This IR heterodyne data complements the $\nu 5$ rotational data of Ref. 1 and the laser Stark data of Ref. 2.