Physical mechanisms and scaling laws of K-shell double photoionization
- Hoszowska, Joanna Department of Physics, University of Fribourg, Switzerland
- Kheifets, A. K. Research School of Physical Sciences, Australian National University, Canberra, Australia
- Dousse, Jean-Claude Department of Physics, University of Fribourg, Switzerland
- Berset, Michel Department of Physics, University of Fribourg, Switzerland
- Bray, I. ARC Centre for Matter-Antimatter Studies, Curtin University, Perth, Australia
- Cao, Wei Department of Physics, University of Fribourg, Switzerland
- Fennane, Karima Department of Physics, University of Fribourg, Switzerland
- Kayser, Yves Department of Physics, University of Fribourg, Switzerland
- Kavčič, Matjaz J. Stefan Institute, Ljubljana, Slovenia
- Szlachetko, Jakub Department of Physics, University of Fribourg, Switzerland
- Szlachetko, Monika Department of Physics, University of Fribourg, Switzerland
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20.02.2009
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.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 11812
- DOI 10.1103/PhysRevLett.102.073006
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301163
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