Abstract
High-energy-resolution photoexcited x-ray-emission measurements were carried out on krypton with the excitation energy tuned around the and 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 ionization signal. The latter was subtracted from the measured maps, yielding isolated and 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.
2 More- Received 23 June 2014
DOI:https://doi.org/10.1103/PhysRevA.90.022513
©2014 American Physical Society