High-resolution x-ray-emission study of 1s4p and 1s3d two-electron photoexcitations in Kr

Kavčič, Matjaz; Žitnik, M.; Sokaras, D.; Weng, T.-C.; Alonso-Mori, R.; Nordlund, D.; Dousse, Jean-Claude; Hoszowska, Joanna

doi:10.1103/PhysRevA.90.022513

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Journal article

High-resolution x-ray-emission study of 1s4p and 1s3d two-electron photoexcitations in Kr

Kavčič, Matjaz Jožef Stefan Institute, Ljubljana, Slovenia
Žitnik, M. Jožef Stefan Institute, Ljubljana, Slovenia - Faculty of Mathematics and Physics, University of Ljubljana, Slovenia
Sokaras, D. SLAC National Accelerator Laboratory, Menlo Park, California, USA
Weng, T.-C. SLAC National Accelerator Laboratory, Menlo Park, California, USA
Alonso-Mori, R. SLAC National Accelerator Laboratory, Menlo Park, California, USA
Nordlund, D. SLAC National Accelerator Laboratory, Menlo Park, California, USA
Dousse, Jean-Claude Department of Physics,University of Fribourg, Switzerland
Hoszowska, Joanna Department of Physics,University of Fribourg, Switzerland

21.08.2014

Published in:

Physical Review A. - 2014, vol. 90, no. 2, p. 022513

English High-energy-resolution photoexcited KN2,3 x-ray-emission measurements were carried out on krypton with the excitation energy tuned around the 1s4p and 1s3d double-excitation thresholds. Comprehensive two-dimensional resonant inelastic x-ray-scattering maps were recorded for the range of excitation and emission energies corresponding to both types of double excitations. The double-excitation signal could be clearly resolved from the dominant 1s ionization signal. The latter was subtracted from the measured maps, yielding isolated 1s4p and 1s3d photoexcitation spectra. Both two-electron excitation spectra are well described by a model spectrum built of consecutive bound-bound discrete transitions and shake-up and shake-off channels giving precise energies and intensities of the corresponding contributions. The obtained results are compared with other existing experimental values based on x-ray-absorption measurements and theoretical predictions.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language