QED corrections to the binding energy of the eka-radon (Z=118) negative ion
Abstract
Quantum electrodynamic (QED) electron self-energy and vacuum polarization corrections to the binding energy of the 8s electron in the eka-radon (Z=118) negative ion are calculated. This ion was found recently to be stable in the Dirac-Coulomb-Breit Hamiltonian; an improved basis and correlating all 119 electrons give a binding energy of -0.064(2) eV. The QED contribution is 0.0059(5) eV, amounting to a 9% reduction of the binding energy. This is the largest relative QED effect reported for neutral or weakly ionized atoms, and confirms the importance of QED corrections for superheavy elements.
- Publication:
-
Physical Review A
- Pub Date:
- February 2003
- DOI:
- 10.1103/PhysRevA.67.020102
- Bibcode:
- 2003PhRvA..67b0102G
- Keywords:
-
- 12.20.Ds;
- 31.30.Jv;
- 31.25.Eb;
- Specific calculations;
- Relativistic and quantum electrodynamic effects in atoms and molecules;
- Electron correlation calculations for atoms and ions: ground state