EUV spectroscopy of heavy highly-charged ions: a summary of the research at the UNILAC with the GSI 5m grazing incidence spectrometer

Abstract

The research performed with the high-resolution GSI 5-m grazing incidence spectrometer in the Extreme Ultra-Violet wavelength range of photons (typically 5 - 200 nm) is briefly reviewed. Over the last decade main emphasis was given to precision spectroscopy of heavy few-electron ions, in particular to Li-like ions in the medium heavy Z region. Here, using a beam foil spectroscopy arrangement, the 2s - 2p_1_/_2 transition energies for Li-like Ni"2"5"+, Zn"2"7"+, Ag"4"4"+, Sn"4"7"+ and Xe"5"1"+ ions were determined on an accuracy level of 50 ppm giving true access to two-photon QED terms. (orig.)Available from TIB Hannover: RA 3692(2002-04) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman