ABINITIO RELATIVISTIC EFFECTIVE POTENTIALS WITH SPIN-ORBIT OPERATORS .4. CS THROUGH RN

Ab initio averaged relativistic effective core potentials (AREP) and spin-orbit (SO) operators are reported for the elements Cs through Rn. Two sets have been calculated for certain elements to provide AREPs with varying core/valence space definitions thereby permitting the treatment of core-valence correlation interactions. The AREPs and SO operators are tabulated as expansions in Gaussian-type functions (GTF). GTF valence basis sets for the lowest energy state of each atom are tabulated. The reliability of the AREPs and SO operators is gauged by comparing calculated atomic excitation energies and SO splitting energies with all-electron relativistic values. Calculated atomic excitation energies are found to agree to 0.12 eV and SO energies to 3.4%. © 1990 American Institute of Physics.