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arxiv: 1706.08778 · v2 · pith:X7VQEH4Y · submitted 2017-06-27 · physics.atom-ph

Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: The 1s Lamb shift in hydrogen-like gold

T. Gassner , M. Trassinelli , R. He{\ss} , U. Spillmann , D. Banas , K.-H. Blumenhagen , F. Bosch , C. Brandau
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W. Chen C. Dimopoulou E. F\"orster R. Grisenti A. Gumberidze S. Hagmann P.-M. Hillenbrand P. Indelicato P. Jagodzinski T. K\"ampfer C. Kozhuharov M. Lestinsky D. Liesen Y. Litvinov R. Loetzsch B. Manil R. M\"artin F. Nolden M. Petridis M. Sanjari K. Schulze M. Schwemlein A. Simionovici M. Steck T. St\"ohlker C. Szabo S. Trotsenko I. Uschmann G. Weber O. Wehrhan N. Winckler D. Winters N. Winters E. Ziegler H. Beyer
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classification physics.atom-ph
keywords spectroscopygoldhardhigh-zhydrogen-likelambmeasurementregime
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Accurate spectroscopy of highly charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for the measurement of the 1s Lamb shift in hydrogen-like gold (Au 78+) in a storage ring through spectroscopy of the Lyman x rays. This measurement represents the first result obtained for a high-Z element using high-resolution wavelength-dispersive spectroscopy in the hard x-ray regime, paving the way for sensitivity to higher-order QED effects.

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