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Electron correlation properties of doubly excited states. Berylliumlike vs heliumlike systems (1991)

Martín, F. ; Bachau, H. ; Galan, P. ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 94 (1991), S. 5011-5020

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: We report a detailed study of electron correlation properties of the (3,n) and 1s2(3,n) resonant doubly excited states of He- and Be-like systems. In both cases, angular correlations are almost constant along the isoelectronic series, whereas radial correlations vary with nuclear charge. It is shown that angular configuration mixings in the Z=∞ limit could be used to classify 1s2(3,n) doubly excited states for high and intermediate values of Z. Calculation of their energies as continuous functions of the nuclear charge (Z diagrams) shows the existence of many avoided crossings at low values of Z, so that no systematic classification can be easily obtained for many doubly excited states in that region.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.460536

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