Interatomic potentials of group IIB atoms (ground state)

Excitation and fluorescence spectra of group IIB atoms (Hg, Cd, Zn) have be en extensively measured in the last years. From these measurements dependab le values for potential parameters like well-depth and vibrational frequenc y for the ground electronic state have been derived with a high degree of a ccuracy. A determination of the equilibrium distance for Hg is also availab le. For Cd and Zn, the equilibrium distances are not known, though. Here we propose to use low-density viscosity measurements together with the spectr oscopic data to give an estimate of these distances. (C) 2001 Elsevier Scie nce B.V. All rights reserved.