Hoszowska, J.Kheifets, AnatoliBerset, M.Bray, IgorCao, W.Dousse, Jean-ClaudeFennane, K.Kavcic, M.Kayser, Y.Szlachetko, J.Szlachetko, M.2015-12-101951-6355http://hdl.handle.net/1885/51352We report on the investigation of the photon energy dependence of double 1s photoionization of light atoms and compare the cross sections for hollow atom and He-like ion production. Measurements of the Kα hypersatellite x-ray spectra of Mg, Al, and Si we200910.1140/epjst/e2009-00968-92015-12-09