Knowledge Bank

Laser induced fluorescence spectrum of FeC between 720-830 nm has been recorded and analysed. 12 electronic transitions have been studied. Transitions from the $\Omega =3,2$ and 1 substates of the $X3\Delta i$ state have been observed. The spin-orbit constant of the ground state is determined to be $-211.5cm-1$, however, the spin-orbit separation between $X3\Delta 2$ and $X3\Delta 3$ substates is measured to be $-329.809cm-1$. In addition, hot band transitions from $v=1$ level of the $X3\Delta i$ state have also been observed. The vibrational separation, $\Delta G1/2$, of the $X3\Delta 3$ state was measured to be $852.12cm-1$.