Physical mechanisms and scaling laws of K-shell double photoionization
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Hoszowska, Joanna
Department of Physics, University of Fribourg, Switzerland
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Kheifets, A. K.
Research School of Physical Sciences, Australian National University, Canberra, Australia
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Dousse, Jean-Claude
Department of Physics, University of Fribourg, Switzerland
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Berset, Michel
Department of Physics, University of Fribourg, Switzerland
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Bray, I.
ARC Centre for Matter-Antimatter Studies, Curtin University, Perth, Australia
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Cao, Wei
Department of Physics, University of Fribourg, Switzerland
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Fennane, Karima
Department of Physics, University of Fribourg, Switzerland
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Kayser, Yves
Department of Physics, University of Fribourg, Switzerland
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Kavčič, Matjaz
J. Stefan Institute, Ljubljana, Slovenia
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Szlachetko, Jakub
Department of Physics, University of Fribourg, Switzerland
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Szlachetko, Monika
Department of Physics, University of Fribourg, Switzerland
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Published in:
- Physical Review Letters. - 2009, vol. 102, no. 7, p. 073006
English
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-shell photoionization cross-section ratios for neutral atoms with convergent close-coupling calculations for He-like ions, the effect of outer shell electrons on the K-shell DPI process is assessed. Universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms is revealed.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/301163
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