Publication: Energies for the high-L Rydberg states of helium: Asymptotic analysis

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Title	Energies for the high-L Rydberg states of helium: Asymptotic analysis
Authors/Editors*	R. El-Wazni, and GWF Drake
Where published*	Physical Review A
How published*	Journal
Year*	2009
Volume	80
Number	6
Pages	064501 (4pages)
Publisher	American Physical Society
Keywords	FINE-STRUCTURE; VALUES; TERM
Link	http://pra.aps.org.ezproxy.uwindsor.ca/abstract/PRA/v80/i6/e064501
Abstract	The asymptotic expansion method based on a core polarization potential for the Rydberg electron is reviewed and extended to the high angular momentum states of helium up to L=15. A comparison with recent large-scale configuration interaction calculations for the nonrelativistic energies shows that there is good agreement for L=7, but there are serious systematic disagreements for the states of higher angular momentum. A possible explanation is that there is an important class of configurations missing from the CI calculations.