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  Two-loop QED contributions tests with mid-Z He-like ions

Kubicek, K., Bruhns, H., Braun, J., Crespo López-Urrutia, J. R., & Ullrich, J. (2009). Two-loop QED contributions tests with mid-Z He-like ions. Journal of Physics: Conference Series, 163: 012007.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-7758-3 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-7759-1
Genre: Konferenzbeitrag

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 Urheber:
Kubicek, K.1, Autor           
Bruhns, H.1, Autor           
Braun, J.1, Autor           
Crespo López-Urrutia, J. R.1, Autor           
Ullrich, J.1, Autor           
Affiliations:
1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              

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Schlagwörter: -
 Zusammenfassung: We report about high-precision wavelength determination of H-like and He-like ions at the Heidelberg Electron Beam Ion Trap (HD-EBIT). The experiment was carried out with a novel flat crystal (Si-111) spectrometer applying a reference technique without collimation. The result for the transition energy of the 1s2p 1P1→ 1s2 1S0 resonance line in He-like S14+ agrees with theoretical predictions with an experimental accuracy five times higher than earlier experiments. The same line in Ar16+ was measured with a relative uncertainty of δλ/λ = 2 × 10-6, a factor of 2.5 more accurate than any X-ray wavelength in highly charged ions ever reported, and for He-like ions probes QED two-electron and two-photon radiative corrections. Beside relative wavelength measurements absolute ones were carried out using the Bond method. The results point at the possibility of establishing absolute Lyman-α1 transition X-ray wavelength standards in the future.

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Sprache(n): eng - English
 Datum: 2009
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 456478
DOI: 10.1088/1742-6596/163/1/012007
 Art des Abschluß: -

Veranstaltung

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Titel: 14th International Conference on the Physics of Highly Charged Ions (HCI 2008)
Veranstaltungsort: Chofu, Tokyo, Japan
Start-/Enddatum: 2008-09-01 - 2008-09-05

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Titel: Journal of Physics: Conference Series
  Alternativer Titel : J. Phys.: Conf. Ser.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 163 Artikelnummer: 012007 Start- / Endseite: - Identifikator: -