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Phys. Rev. A 74, 062510 (2006) [5 pages]

Helium energy levels including m⁶ corrections

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Krzysztof Pachucki
Institute of Theoretical Physics, Warsaw University, Hoa 69, 00-681 Warsaw, Poland

See Also: Erratum

Received 17 October 2006; published 15 December 2006

Them alpha ⁶ correction to energy is expressed in terms of aneffective Hamiltonian H⁽⁶⁾ for an arbitrary state of helium. Numericalcalculations are performed for n=2 levels, and the previous resultfor the 2 ³P centroid is corrected. While the resulting theoreticalpredictions for the ionization energy are in moderate agreement withexperimental values for 2 ³S₁, 2 ³P, and 2 ¹S₀ states, they arein significant disagreement for the singlet state 2¹P₁.

©2006 The American Physical Society

URL:	http://link.aps.org/doi/10.1103/PhysRevA.74.062510
DOI:	10.1103/PhysRevA.74.062510
PACS:	31.30.Jv; 12.20.Ds; 31.15.Md; 32.10.Fn 31.30.Jv Relativistic and quantum electrodynamic effects in atoms and molecules 12.20.Ds Specific calculations in quantum electrodynamics 31.15.Md Perturbation theory (atoms and molecules) 32.10.Fn Atomic fine and hyperfine structure YEAR: 2006
KEYWORDS:	helium neutral atoms, atomic structure

See Also

Erratum: Helium energy levels including m alpha ⁶ corrections [Phys. Rev. A 74, 062510 (2006)]
Krzysztof Pachucki
Phys. Rev. A 76, 059906 (E) (2007)

REFERENCES (25)

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Erratum

Erratum: Helium energy levels including m⁶ corrections [Phys. Rev. A 74, 062510 (2006)]
Krzysztof Pachucki
Phys. Rev. A 76, 059906 (E) (2007)

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