Research output: Contribution to journal › Article › peer-review
We present the most accurate up-to-date theoretical values of the 2 p1/2 -2s and 2 p3/2 -2s transition energies and the ground-state hyperfine splitting in Sc18+. All two- and three-electron contributions to the energy values up to the two-photon level are treated in the framework of bound-state QED without αZ expansion. The interelectronic interaction beyond the two-photon level is taken into account by means of the large-scale configuration-interaction Dirac-Fock-Sturm (CI-DFS) method. The relativistic recoil correction is calculated with many-electron wave functions in order to take into account the electron-correlation effect. The accuracy of the transition energy values is improved by a factor of 5 compared to the previous calculations. The CI-DFS calculation of interelectronic-interaction effects and the evaluation of the QED correction in an effective screening potential provide significant improvement for the 2s hyperfine splitting. The results obtained are in good agreement with recently published experimental data.
Original language | English |
---|---|
Article number | 012511 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 76 |
Issue number | 1 |
DOIs | |
State | Published - 25 Jul 2007 |
ID: 35326610