Hypersatellite x-ray decay of $3d$ hollow-$K$-shell atoms produced by heavy-ion impact
- Maillard, Yves-Patrick Department of Physics, University of Fribourg, Switzerland
- Dousse, Jean-Claude Department of Physics, University of Fribourg, Switzerland
- Hoszowska, Joanna Department of Physics, University of Fribourg, Switzerland
- Berset, Michel Department of Physics, University of Fribourg, Switzerland
- Mauron, Olivier Department of Physics, University of Fribourg, Switzerland
- Raboud, Pierre-Alexandre Department of Physics, University of Fribourg, Switzerland
- Kavčič, Matjaz J. Stefan Institute, Ljubljana, Slovenia
- Rzadkiewicz, J. National Centre for Nuclear Research, Otwock Swierk, Poland
- Banaś, Dariusz Institute of Physics, Jan Kochanowski University, Kielce, Poland
- Tökési, K. Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen, Hungary
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10.07.2018
Published in:
- Physical Review A. - 2018, vol. 98, no. 1, p. 012705
English
We report on the radiative decay of double K-shell vacancy states produced in solid Ca, V, Fe, and Cu targets by impact with about 10 MeV/amu C and Ne ions. The resulting K hypersatellite x-ray emission spectra were measured by means of high- energy-resolution spectroscopy using a von Hamos bent crystal spectrometer. The experiment was carried out at the Philips variable energy cyclotron of the Paul Scherrer Institute. From the fits of the x-ray spectra the energies, line widths, and relative intensities of the hypersatellite x-ray lines could be determined. The fitted intensities were corrected to account for the energy-dependent solid angle of the spectrometer, effective source size, target self-absorption, crystal reflectivity, and detector efficiency. The single-to-double K-shell ionization cross-section ratios were deduced from the corrected relative intensities of the hypersatellites and compared to theoretical predictions from the semiclassical approximation model using hydrogenlike and Dirac-Hartree-Fock wave functions and from classical trajectory Monte Carlo calculations.
- 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 322949
- DOI 10.1103/PhysRevA.98.012705
- Persistent URL
- https://folia.unifr.ch/unifr/documents/307181
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