SMS92: a program for relativistic isotope shift calculations Original Research Article

The energy levels of an atomic system are affected both by nuclear motion and volume effects. Given a fully relativistic four-component wavefunction generated by the GRASP92 multiconfiguration Dirac-Fock package, this program calculates the electron density at the nucleus and the normal and specific mass shift parameters. Combining these electronic quantities with avaialable nuclear data, isotope dependent energy level shifts can be determined.