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EnglishThe 4d edges of Ta, Pt, and Au were measured by means of reflection-electron energy-loss spectroscopy for different primary-beam energies E(p) in the maximum range 884 < E(p) < 2186 eV with the aim of investigating the nature of the electronic transitions involved at this edge. In order to allow a proper comparison of the measured edge intensities to each other, a normalization procedure was developed. On the basis of soft-x-ray-absorption spectroscopy data and by means of a theoretical muffin-tin generalized oscillator strength and differential cross-section calculations, it was possible to determine that nondipole d-d electron transitions are dominant at the 4d edges of all three elements. The observed edge-intensity decrease as a function of increasing atomic number is explained also on the basis of the amount of empty d-character states available at the Fermi level in each element.
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| Titolo: | NONDIPOLE TRANSITIONS AT THE 4D EDGES OF TA, PT, AND AU - THEORY AND EXPERIMENT |
| Autori: | |
| Data di pubblicazione: | 1992 |
| Rivista: | |
| Handle: | http://hdl.handle.net/20.500.11770/134537 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/20.500.11770/134537
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