Wavelengths of 2l-->3l' Transitions in L-Shell Ions of Iron and Nickel: A Combined Configuration Interaction and Many-Body Perturbation Theory Approach

Details Wavelengths of 2l-->3l' Transitions in L-Shell Ions of Iron and Nickel: A Combined Configuration Interaction and Many-Body Perturbation Theory Approach Wavelengths of 2l-->3l' Transitions in L-Shell Ions of Iron and Nickel: A Combined Configuration Interaction and Many-Body Perturbation Theory Approach

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apjs..156..105g&link_type=abstract

The Astrophysical Journal Supplement Series, Volume 156, Issue 1, pp. 105-110.

Astronomy and Astrophysics

Astronomy

20

Atomic Data, Atomic Processes

Scientific paper

Using a combined configuration interaction and many-body perturbation theory approach, we calculate the level energies of 1s22lq and 1s22lq-13l' (1<=q<=8) complexes in iron and nickel ions. Comparison of 1s22lq energies with experimental results shows that the calculation is accurate to within ~0.15 eV for these levels. The accuracy of 1s22lq-13l' energies can be slightly worse, at ~0.5 eV. The theoretical wavelengths of 2-->3 transitions of iron ions are compared with the published experimental measurements, and discrepancies are found to be mostly within +/-10 mÅ. Similar accuracy is expected for wavelengths of nickel ions. Such accuracy is a significant improvement over that obtainable with standard configuration interaction methods. A complete table of 2l-->3l' transition wavelengths of all L-shell ions of iron and nickel is presented.

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