arc.alkali_atom_functions.AlkaliAtom.getHFSEnergyShift#
- AlkaliAtom.getHFSEnergyShift(j, f, A, B=0, s=0.5)[source]#
Energy shift of HFS from centre of mass \(\Delta E_\mathrm{hfs}\)
\(\Delta E_\mathrm{hfs} = \frac{A}{2}K+B\frac{\frac{3}{2}K(K+1)-2I(I+1)J(J+1)}{2I(2I-1)2J(2J-1)}\)
where \(K=F(F+1)-I(I+1)-J(J+1)\)
- Parameters
- Returns
Energy shift ( \(\Delta E_\mathrm{hfs}\))
- Return type