Abstract
Calculations using multiconfiguration Breit-Pauli and multiconfiguration Dirac-Fock methodologies have revealed that the radiative and Auger rates, and the associated fluorescence yields, of the six electron 1s2s(2)2p(3) K-shell vacancy isoelectronic sequence exhibit nonmonotonic behavior as a function of nuclear charge Z. This behavior is explained in terms of an accidental degeneracy, an avoided crossing of two nearly degenerate spin-orbit coupled levels. The results also demonstrate the importance of including both electron-electron correlation and spin-orbit effects even at low Z.
Original language | English |
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Pages (from-to) | 032509-1-032509-6 |
Journal | Physical Review A |
Volume | 78 |
Issue number | 3 |
DOIs | |
Publication status | Published - Sept 2008 |
Keywords
- x-ray emission
- dielectronic recombination
- configuration interaction
- theoretical calculations
- laboratory measurements
- core excitations
- transition rates
- vacancy states
- coster kronig