He-like hole states in mid-Z atoms studied by high-resolution K X-ray spectroscopy

✍ Scribed by J. Rzadkiewicz; D. Chmielewska; T. Ludziejewski; P. Rymuza; Z. Sujkowski; D. Castella; D. Corminboeuf; J.-Cl. Dousse; B. Galley; Ch. Herren; J. Hoszowska; J. Kern; M. Polasik; M. Pajek

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 125 KB
• Volume: 264
• Category: Article
• ISSN: 0375-9601
• DOI: 10.1016/s0375-9601(99)00814-2

✦ Synopsis

High-resolution measurements of the K a X-ray spectra were performed with a bent crystal diffraction spectrometer 1,2 for zirconium, niobium, molybdenum and palladium targets bombarded by 280 and 360 MeV oxygen ions. The energy differences between the K a diagram and the K h a hypersatellite transitions as well as the intensity ratios 1,2 1,2 Ž h . Ž h . I K a rI K a were determined. The L-shell satellites of the diagram and of the hypersatellite lines were resolved. The 1 2 data are interpreted in terms of the properties of He-like hole states in mid-Z atoms. The Breit interaction correction is determined. The corrections due to the unresolved M-shell satellites and to the QED are found to be much smaller than the Breit terms and comparable to the experimental accuracy.