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Spectra and Hamiltonians

4Δ

CoO Spectrum

CoO Spectrum

CoO sample spectra. Notice the octet splitting due to the cobalt hyperfine interaction and further splitting due to lambda-doubling.

CoO Stick Spectrum

CoO stick spectrum. Lambda-doubling occurs in the W=3/2 and W=1/2 spin components for this molecule. Also notice that the ground state is inverted.

H(effective) = H(rotation)+ H(spin orbit)+ H(spin spin)+ H(lambda doubling)+ H(magnetic hyperfine) + H(3)(spin orbit)