Perfeziona i miei risultati

Double K-shell photoionization of low-Z atoms and He-like ions

Hoszowska, J. ; Kheifets, A. S. ; Berset, M. ; Bray, I. ; Cao, W. ; Dousse, J.-Cl ; Fennane, K. ; Kavčič, M. ; Kayser, Y. ; Szlachetko, J. ; Szlachetko, M.

In: The European Physical Journal Special Topics, 2009, vol. 169, no. 1, p. 23-27

Double K-shell photoionization of low-Z atoms and He-like ions

Hoszowska, Joanna ; Kheifets, A. S. ; Berset, Michel ; Bray, I. ; Cao, Wei ; Dousse, Jean-Claude ; Fennane, Karima ; Kavčič, M. ; Kayser, Yves ; Szlachetko, Jakub ; Szlachetko, Monika

In: The European Physical Journal: Special Topics, 2009, vol. 169, no. 1, p. 23-27

We 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 were carried out using the Fribourg high-resolution x-ray spectrometer installed at the ID21 and ID26 beam lines at the ESRF. The...

Physical mechanisms and scaling laws of K-shell double photoionization

Hoszowska, Joanna ; Kheifets, A. K. ; Dousse, Jean-Claude ; Berset, Michel ; Bray, I. ; Cao, Wei ; Fennane, Karima ; Kayser, Yves ; Kavčič, Matjaz ; Szlachetko, Jakub ; Szlachetko, Monika

In: Physical Review Letters, 2009, vol. 102, no. 7, p. 073006

We report on the photon energy dependence of the K-shell double photoionization (DPI) of Mg, Al, and Si. The DPI cross sections were derived from high-resolution measurements of x-ray spectra following the radiative decay of the K-shell double vacancy states. Our data evince the relative importance of the final-state electron- electron interaction to the DPI. By comparing the double-to-single...