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  Transition energy measurements in hydrogenlike and heliumlike ions strongly supporting bound-state QED calculations

Kubicek, K., Mokler, P. H., Mäckel, V., Ullrich, J., & Crespo López-Urrutia, J. R. (2014). Transition energy measurements in hydrogenlike and heliumlike ions strongly supporting bound-state QED calculations. Physical Review A, 90(3): 032508. doi:10.1103/PhysRevA.90.032508.

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Kubicek, K.1, Author           
Mokler, P. H.2, Author           
Mäckel, V.1, Author           
Ullrich, J.1, Author           
Crespo López-Urrutia, J. R.2, Author           
Affiliations:
1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              
2Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society, ou_2025284              

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 Abstract: For the hydrogenlike Ar17+ ion, the 1s Lamb shift was absolutely determined with a 1.4% accuracy based on Lyman-α wavelength measurements that have negligible uncertainties from nuclear size effects. The result agrees with state-of-the-art quantum electrodynamics (QED) calculations, and demonstrates the suitability of Lyman-α transitions in highly charged ions as x-ray energy standards, accurate at the five parts-per-million level. For the heliumlike Ar16+ ion the transition energy for the 1s2p1P1→1s21S0 line was also absolutely determined on an even higher level of accuracy. Additionally, we present relative measurements of transitions in S15+,S14+, and Fe24+ ions. The data for the heliumlike S14+,Ar16+, and Fe24+ ions stringently confirm advanced bound-state QED predictions including screened QED terms that had recently been contested.

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Language(s): eng - English
 Dates: 2014-09-22
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevA.90.032508
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Title: Physical Review A
  Other : Phys. Rev. A
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 90 (3) Sequence Number: 032508 Start / End Page: - Identifier: DOI: DOI: 10.1103/PhysRevA.90.032508
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2