EXAFS spectroscopy on overpressurized krypton bubbles in copper and nickel
M F Rosu; L Niesen; A van Veen; J H Evans
Журнал:
Journal of Physics: Condensed Matter
Дата:
1997-01-06
Аннотация:
Bulk copper and nickel samples containing 2.5 and 5 at.% krypton present in overpressurized bubbles have been studied by EXAFS spectroscopy. A fit to the experimental data yields krypton nearest-neighbour distances of 3.62(4) and 3.69(4) Å in a copper and a nickel matrix respectively. These values confirm that krypton bubbles are overpressurized. Calculated krypton packing densities are in good agreement with results from other techniques. In addition, average krypton - metal nearest-neighbour distances of 3.0(1) Å were determined. Atomistic calculations show a wide variation of krypton - metal distances, in agreement with the experiment.
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