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- W2076018030 abstract "The K and L X-ray absorption spectra of Al are computed on the basis of an APW band structure calculation over an energy range of 40 eV. The results are compared with experiments. The overall shapes and especially the positions of the main maxima and minima of the experimental spectra are well reproduced by the theory. An appreciable lifetime broadening for the excited electrons is needed to smear out the structures to the extent found in the experiments. Discrepancies in the relative magnitudes of the spectral features between theory and experiment suggest that the core hole screening effect in the final state is primarily to scale the intensities in an energy dependent manner.Die K- und L-Rontgenabsorptionsspektren von Al werden fur einen Energiebereich bis 40 eV mittels der APW-Methode berechnet und mit experimentellen Spektren verglichen. Die Form und die energetische Lage der Hauptmaxima und -minima werden durch die Theorie gut wiedergegeben. Der Vergleich zwischen Theorie und Experiment zeigt, das die experimentelle Verbreiterung der Strukturen, verursacht durch die Lebensdauer der angeregten Elektronen, merklich ist und berucksichtigt werden mus. Die Unterschiede zwischen den berechneten Absorptionskoeffizienten und den gemessenen Spektren deuten darauf hin, das der Endzustand wesentlich durch Abschirmungseffekte des inneren Lochzustandes beeinflust wird. Die Abschirmung fuhrt zu einer energieabhangigen Modulation der Absorptionskoeffizienten." @default.
- W2076018030 created "2016-06-24" @default.
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- W2076018030 date "1983-09-01" @default.
- W2076018030 modified "2023-09-27" @default.
- W2076018030 title "K and L absorption spectra of aluminium from APW calculation" @default.
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- W2076018030 doi "https://doi.org/10.1002/pssb.2221190131" @default.
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