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    Université de Fribourg

    Lifetimes of doubly K -shell ionized states

    Polasik, M . ; Słabkowska, K. ; Kozioł, K. ; Starosta, J. ; Dousse, Jean-Claude ; Hoszowska, Joanna ; Rzadkiewicz, J.

    In: Physica Scripta, 2011, vol. 2011, no. T144, p. 014021

    The present work provides a reliable interpretation of the Khα₁/Khα₂ intensity ratios and an explanation of the lifetime values for K-shell hollow atoms based on an advanced theoretical analysis (using extensive multiconfiguration Dirac–Fock calculations with the inclusion of the transverse Breit interaction and quantum electrodynamics ...

    Université de Fribourg

    Khα1,2 X-ray hypersatellite line broadening as a signature of K-shell double photoionization followed by outer-shell ionization and excitation

    Polasik, M. ; Słabkowska, K. ; Rzadkiewicz, J. ; Kozioł, K. ; Starosta, J. ; Wiatrowska-Kozioł, E. ; Dousse, Jean-Claude ; Hoszowska, Joanna

    In: Physical Review Letters, 2011, vol. 107, no. 7, p. 073001

    We propose a novel approach for the theoretical analysis of the photoinduced high-resolution Khα1,2 x-ray hypersatellite spectra, which allows us to obtain reliable values of lifetimes of the doubly K-shell ionized states and fundamental information about the relative role of K-shell double photoionization (DPI) mechanisms. It is demonstrated for the first time that the...