HYDROGENIC ATOMS WITH SPINLESS NUCLEUS IN A MAGNETIC-FIELD

Recently published calculations of the relativistic Zeeman splitting i n neutral hydrogen atoms with a spinless nucleus are now extended to t he treatment of such charged systems with anomalous magnetic moment in cluded. A detailed discussion of the centre of mass problem in a magne tic field is given. It is shown that for a treatment of the charge sys tems, the knowledge of the complete centre of mass wavefunction is ess ential together with the relativistic unitary transformation which min imizes the coupling between the relative and centre of mass motion.