Anticrossing, Quantum-Beat, and Double-Resonance Experiments

3 Anticrossing, Quantum-Beat, and Double-Resonance Experiments 

When the perturbation matrix element, H12, is small compared to [E)1 —,  

If this condition is met, regardless of the size of H12 + MFg, 12, the radiative properties of both +, M) and —, M) eigenfunctions become profoundly 

A fundamental difference exists with respect to a priori knowledge of electric versus magnetic dipole moments. Electric moments depend on the detailed shape of electronic wavefunctions and must always be measured experimentally or computed from accurate ab initio wavefunctions. In contrast, magnetic moments are directly proportional to angular momenta and may be computed from the eigenvectors of an effective Hamiltonian without knowledge of the electronic wavefunctions. 

In the case of electronic angular momenta, the proportionality constants gi and gs in 

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