Safronova, M.
, Fischer, C.
and Ralchenko, Y.
(2008),
Relativistic All-Order and MCHF Calculations of the 4d - 4f Energy Separation in Li I, Physical Review A (Atomic, Molecular and Optical Physics)
(Accessed October 14, 2025)
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Relativistic All-Order and MCHF Calculations of the 4d - 4f Energy Separation in Li I
Published
Author(s)
, , Y Ralchenko
Abstract
We present calculation of the 4d-4f energy separation in Li I using two advanced teqhniques in atomic structure theory, namely, relativistic all-order method and multiconfiguration Hartree-Fock (MCHF) method. The accuracy of our calculations is also investigated by conducting a third-order many-body perturbation theory (MBPT) calculation that allowed us to evaluate the importance of fourth and higher-order corrections. A large-scale MCHF calculation is performed using the active space method and the core-polarization approximation. The obtained results are shown to agree with the most accurate available experimental data.Citation
Physical Review A (Atomic, Molecular and Optical Physics)
Pub Type
Journals
Keywords
energy levels, hartee-fock, neutral lithium, pertubation theory
Citation
Issues
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Created October 16, 2008