Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold. (18th July 2018)

• Record Type: Journal Article
• Authors: Gassner, T; Trassinelli, M; Heß, R; Spillmann, U; Banaś, D; Blumenhagen, K-H; Bosch, F; Brandau, C; Chen, W; Dimopoulou, Chr; Förster, E; Grisenti, R E; Gumberidze, A; Hagmann, S; Hillenbrand, P-M; Indelicato, P; Jagodzinski, P; Kämpfer, T; Kozhuharov, Chr; Lestinsky, M; Liesen, D; Litvinov, Yu A; Loetzsch, R; Manil, B; Märtin, R; Nolden, F; Petridis, N; Sanjari, M S; Schulze, K S; Schwemlein, M; Simionovici, A; Steck, M; Stöhlker, Th; Szabo, C I; Trotsenko, S; Uschmann, I; Weber, G; Wehrhan, O; Winckler, N; Winters, D F A; Winters, N; Ziegler, E; Beyer, H F;
• Is Part Of: New journal of physics. Volume 20:Number 7(2018:Jul.)
• Publication Date: 2018-07-18
• Subjects: quantum electrodynamics test -- strong Coulomb field -- energy-dispersive x-ray spectroscopy -- storage rings; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/aad01d
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: 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 1 s 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.