Use ofZ-correlation diagrams to help classification of doubly excited states
- 1 October 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 40 (8), 4298-4312
- https://doi.org/10.1103/physreva.40.4298
Abstract
Taking as a benchmark the accurate calculations on ,3S, ,3P, and ,3D resonances under the N=2 threshold, carried out for two-electron systems, we present an appraisal of the practical aspects of, and equivalence between, existing schemes to classify doubly excited states. To relate properties of resonances for different values of the nuclear charge Z, we have also carried out calculations of their positions and widths for noninteger Z and have drawn the ensuing correlation diagrams. We show that however good the descriptions are they do not provide a completely general scheme to classify resonances. Furthermore, the proposed schemes are not equivalent, as is usually assumed.
Keywords
This publication has 69 references indexed in Scilit:
- Electron correlation in doubly excited S states: large-Z limitJournal of Physics B: Atomic, Molecular and Optical Physics, 1988
- Spectra of electrons ejected from aligned autoionising states created by K++Ne collisionsJournal of Physics B: Atomic and Molecular Physics, 1987
- Comment on ‘‘Evidence for correlated double-electron capture in low-energy collisions ofwith He’’Physical Review Letters, 1987
- Autoionisation states (3l3l') of the helium-like nitrogen ionJournal of Physics B: Atomic and Molecular Physics, 1987
- Charge Exchange Collision Experiments With Highly Charged Ions -Status Report-Physica Scripta, 1983
- Interference of autoionising transitions in separate atoms: a theoretical analysis applied to electron distributions from He++He collisionsJournal of Physics B: Atomic and Molecular Physics, 1982
- Energy levels and classifications of doubly-excited states in two-electron systems with nuclear charge, Z = 1, 2, 3, 4, 5, below the N = 2 and N = 3 thresholdsAtomic Data and Nuclear Data Tables, 1977
- Compound-Atom States for Two-Electron SystemsPhysical Review B, 1965
- Static Approximation and Bounds on Single-Channel Phase ShiftsPhysical Review B, 1962
- Unified theory of nuclear reactionsAnnals of Physics, 1958