Abstract
The isotope shift of the bound-bound electric dipole transition at 1162.75 nm in the osmium anion was measured by high-precision collinear laser spectroscopy. The transition was observed in all naturally occurring isotopes, including Os with a natural abundance of 0.02. We combined the data with our prior measurements of the hyperfine structure in Os and Os and used them to determine experimental values for the isotope shift coefficients. The normal mass shift, specific mass shift, and field shift coefficients were found to be GHz u, THz u, and GHz fm, respectively. Theoretical values for the and parameters were calculated based on a series of relativistic configuration interaction computations and a Fermi-like charge distribution and found to be in good agreement with the experimental values.
- Received 8 September 2011
DOI:https://doi.org/10.1103/PhysRevA.84.062510
©2011 American Physical Society