K-shell double photoionization of Be, Mg, and Ca
نویسندگان
چکیده
منابع مشابه
Single and double photoionization of Be and Mg
A new version of the time-dependent close-coupling method is used to calculate the single and double photoionization of the Be and Mg atoms. Total cross sections are calculated using an implicit time propagator with a core orthogonalization method on a variable radial mesh. The double to single photoionization cross section ratios are found to be in good agreement with experiment for both Be an...
متن کاملPhysical mechanisms and scaling laws of K-shell double photoionization.
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 K-...
متن کاملDouble K -shell photoionization and hypersatellite x-ray transitions of 12 Z 23 atoms
Single-photon double K-shell ionization of low-Z neutral atoms in the range 12 Z 23 is investigated. The experimental method was based on measurements of the high-resolution Kα hypersatellite x-ray spectra following the radiative decay of the K-shell double-vacancy states excited by monochromatic synchrotron radiation. The photon energy dependence of the double K-shell ionization was measured o...
متن کاملDouble K-shell photoionization of low-Z atoms and He-like ions
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 double-to-singl...
متن کاملDouble Photoionization of Mg and the Scaling Model
Direct double photoionization of atoms in which two electrons are simultaneously emitted is of high interest for understanding electron correlations. Of particular interest are the alkaline-earth metals that are heliumlike atoms insofar as they only have two outer-valence electrons while the other electrons can be approximated as spectators [1]. The experiments were performed on the Wadsworth b...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2009
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.79.042504