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 (1) , Martino Trassinelli (2) , R Hess (1) , U Spillmann (1) , D Banas (3) , K-H Blumenhagen (1) , F Bosch (1) , C Brandau (1) , W Chen (1) , Chr Dimopoulou (1) , E Förster (4) , R Grisenti (1) , A Gumberidze (1) , S Hagmann (1) , P-M Hillenbrand (1) , P Indelicato (5) , P Jagodzinski (6) , T Kämpfer (1) , Chr Kozhuharov (1) , M Lestinsky (1) , D. Liesen (1) , Yu A Litvinov (1) , R Loetzsch (4) , B Manil (7) , R Märtin (1) , F Nolden (1) , M S Petridis (1) , M S Sanjari (1) , K S Schulze (1) , M Schwemlein (1) , A Simionovici (8) , M Steck (1) , Th Stöhlker (1) , C I Szabo (5) , S Trotsenko (1) , I Uschmann (4) , G Weber (1) , O Wehrhan (4) , N Winckler (1) , D F A Winters (1) , N Winters (1) , E Ziegler (1) , H F Beyer (1)

1 GSI - Helmholtz zentrum für Schwerionenforschung GmbH
2 INSP-E10 - Agrégats et surfaces sous excitations intenses
3 Institute of Physics [Kielce]
4 Institut für Optik und Quantenelektronik
5 LKB (Jussieu) - Laboratoire Kastler Brossel
6 Kielce University of Technology
7 LPL - Laboratoire de Physique des Lasers
8 ISTerre - Institut des Sciences de la Terre

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 the ESR 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.

Mots clés: numbers: 0785Fv; 0785Nc; 1220Fv; 3130J-; 3230Rj Keywords: X-ray spectrometer; micro-strip detector; storage ring; high-Z ions; QED

Domaines: Physique Atomique [physics.atom-ph]

T Gassner, Martino Trassinelli, R Hess, U Spillmann, D Banas, et al.. Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: The 1s Lamb shift in hydrogen-like gold. 2017. ⟨hal-01546356v1⟩