Perturbation theory Z expansion for many-electron autoionising states of atomic systems. I. Calculations of the energy
- 14 October 1979
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 12 (19) , 3171-3185
- https://doi.org/10.1088/0022-3700/12/19/005
Abstract
A theory for calculating energies and wavelengths using the Z-expansion technique is presented; it is suitable for degenerate autoionisation states of many-electron ions. The Hartree-Fock energy, correlation energy and relativistic corrections have been taken into account. To calculate the relativistic part the first non-zero term of the expansion in powers of Z alpha was considered, which, in fact, is described by the Breit Hamiltonian. Four-electron systems are considered as an example. Results of calculations of the wavelengths as well as the theory and numerical results for autoionisation rates and radiative transition probabilities will be given in future papers.Keywords
This publication has 20 references indexed in Scilit:
- Dielectronic Satellite Spectra for Highly - Charged Helium - like Ions -- II IMPROVED CALCULATIONSMonthly Notices of the Royal Astronomical Society, 1975
- Relativistic and second order Z-dependent calculations for the 1s-2p transitions in Li I-like ionsJournal of Physics B: Atomic and Molecular Physics, 1974
- Techniques for the calculation of atomic structures and radiative data including relativistic correctionsComputer Physics Communications, 1974
- Satellite Line Spectra from Laser-Produced PlasmasThe Astrophysical Journal, 1974
- The singlet-triplet correction in the fine structure of two-electron ionsJournal of Physics B: Atomic and Molecular Physics, 1972
- Dielectronic Satellite Spectra for Highly-Charged Helium-Like Ion LinesMonthly Notices of the Royal Astronomical Society, 1972
- Coronal survey in X-rays of O vii and Ne ixSolar Physics, 1972
- A programme for calculating atomic structuresJournal of Physics B: Atomic and Molecular Physics, 1969
- An expansion method for calculating atomic properties III. The 2 S and 2 P 0 states of the lithium sequenceProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1963
- Bound States in Quantum Field TheoryPhysical Review B, 1951