Interatomic potentials of group IIB atoms (ground state)

Excitation and fluorescence spectra of group IIB atoms (Hg, Cd, Zn) have been extensively measured in the last years. From these measurements dependable values for potential parameters like well-depth and vibrational frequency for the ground electronic state have been derived with a high degree of accuracy. A determination of the equilibrium distance for Hg is also available. For Cd and Zn, the equilibrium distances are not known, though. Here we propose to use low-density viscosity measurements together with the spectroscopic data to give an estimate of these distances.