Zeeman effect in dynamic Jahn-Teller impurities

Numerical computations show that Ham's reduction factor q varies between the narrow limits $\text{0.484 <}\text{q}\text{<}\text{1}\text{2}$, for strongly coupled E-states. This means that anisotropic parts of the g-factor and hyperfine splitting depend negligibly on warping of the adiabatic potential.