Abstract
The large chemical shifts recently observed in Mössbauer absorption experiments on are explained on the basis of Coulombic interaction between the electron of gold and the and protons. A first-order perturbation calculation is made, using the Coulombic potential within the nucleus due to the electron. Proton wave functions derived from harmonic-oscillator, square-well, and Woods-Saxon nuclear potentials are treated. The latter two potentials yield results that are in reasonable accord with experiment. This model can afford a sensitive comparison of nuclear potentials as well as a determination of the conduction-electron density on impurity atoms. In particular, this calculation discriminates against the harmonic-oscillator potential and shows that the electron density on a gold impurity atom in several hosts is higher than in pure gold. These results also indicate that the proton subshell is filled in the ground state of .
- Received 14 June 1961
DOI:https://doi.org/10.1103/PhysRev.124.354
©1961 American Physical Society