Extended x-ray absorption fine structure has been measured on two powdered samples of Ge-70 and Ge-76 as a function of temperature from 20 to 300 K. The effect of isotopic mass difference on the amplitude of relative atomic vibrations is neatly evidenced by the temperature dependence of the difference of Debye-Waller factors. The isotopic effect is also detected on the difference of nearest-neighbor average ineratomic distances, thanks to a resolution better than 10 fm.

Isotopic effect in extended x-ray-absorption fine structure of germanium

Rocca, Francesco;
2008

Abstract

Extended x-ray absorption fine structure has been measured on two powdered samples of Ge-70 and Ge-76 as a function of temperature from 20 to 300 K. The effect of isotopic mass difference on the amplitude of relative atomic vibrations is neatly evidenced by the temperature dependence of the difference of Debye-Waller factors. The isotopic effect is also detected on the difference of nearest-neighbor average ineratomic distances, thanks to a resolution better than 10 fm.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11582/31655
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