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Ziurys Group Rotational Spectroscopy Research
Arizona Radio Observatory

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Spectra and Hamiltonians

4Σ

KC Spectrum

For KC, the four spin-components of the quartet are well resolved.

NaC Spectrum

For NaC, the middle two spin-components are not resolved; therefore, they appear as a more intense single feature.

CrN Spectrum

For CrN, the four spin-components are asymmetrically spaced due to the large value of the spin-spin parameter, l.

Quartet Sigma Energy Diagram

A generalized energy level diagram for a molecule in a 4Σ state.

H(effective) = H(rotation) + H(spin rotation) + H(3)(spin rotation) + H(spin spin)