Knowledge Bank

The discharge emission spectrum of CrO has been investigated with high resolution Fourier transform spectroscopy in the region 6000 -- $12000cm-1$. Complicated groups of bands occur in the region 7000--10000 $cm-1$, of which one, near $8000cm-1$, has been identified as the (0,0) band of a new $\mathrm{<mrow\; data-mjx-texclass="ORD">5</mrow>}\Sigma -X5\Pi r$ transition of CrO. The perpendicular polarization of this transition permits a direct determination of the A-doubling parameters and the spin-orbit coupling constants of the ground state, which was not possible form the analysis of the $\mathrm{<mrow\; data-mjx-texclass="ORD">5</mrow>}\Pi -5\Pi$ transitions in the visible $region.1$ $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}$W. H. Hocking, A. J. Merer, D. J. Milton, W. E. Jones and G. Krishnamurty, Canad. J. Phys, 58, 516 (1980).