qspec.a_hyper_mu  (  i ,  j ,  mu ,  b_field  )[source]

The magnetic dipole hyperfine structure constant as a function of the nuclear magnetic moment mu and the magnetic field of the electrons at the nucleus b_field $A = \mu\mathcal{B} / (IJ)$.

Parameters:

iquant_like

The nuclear spin quantum number $I$.

jquant_like

The electronic total angular momentum quantum number $J$.

muarray_like

The magnetic moment of the nucleus in units of the nuclear magneton ($\mu_\mathrm{N}$).

b_fieldarray_like

The B-field $\mathcal{B}$ of the atomic electrons at the nucleus (T).

Returns:

a_hyperndarray

The hyperfine structure constant $A$ (MHz).