Journal article

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

  • Hoszowska, Joanna Physics Department, University of Fribourg, Switzerland
  • Kheifets, A. S. Research School of Physical Sciences, Australian National University, Canberra, Australia
  • Berset, Michel Physics Department, University of Fribourg, Switzerland
  • Bray, I. ARC Centre for Matter-Antimatter Studies, Curtin University, Perth, Australia
  • Cao, Wei Physics Department, University of Fribourg, Switzerland
  • Dousse, Jean-Claude Physics Department, University of Fribourg, Switzerland
  • Fennane, Karima Physics Department, University of Fribourg, Switzerland
  • Kavčič, M. J. Stefan Institute, Ljubljana, Slovenia
  • Kayser, Yves Physics Department, University of Fribourg, Switzerland
  • Szlachetko, Jakub Physics Department, University of Fribourg, Switzerland - European Synchrotron Radiation Facility, Grenoble, France
  • Szlachetko, Monika Physics Department, University of Fribourg, Switzerland
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    10.05.2009
Published in:
  • The European Physical Journal: Special Topics. - 2009, vol. 169, no. 1, p. 23-27
English 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-single photoionization cross section ratios were derived as a function of the incident photon beam energy and compared to convergent close-coupling (CCC) calculations for He-like ions. The dynamical electron-electron scattering contribution to the DPI cross-sections was found to be more important for neutral atoms than for the He isoelectronic series.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301213
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