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RESEARCH PRODUCT

Isotopic Effect In Extended X-Ray-Absorption Fine Structure of Germanium

Alexei KuzminAndrea SansonV. I. OzhoginNasser AfifyS. I. TiutiunnikovGiuseppe DalbaS. De PanfilisS. De PanfilisF. RoccaJ. PuransJ. PuransPaolo FornasiniR. Grisenti

subject

Materials scienceExtended X-ray absorption fine structureLATTICE-PARAMETERResolution (electron density)Analytical chemistryGeneral Physics and Astronomychemistry.chemical_elementGermaniumPHONONSAmplitudechemistryCONSTANTDEPENDENCESPECTRAAbsorption (logic)Atomic physics

description

Extended x-ray absorption fine structure has been measured on two powdered samples of 70Ge and 76Ge 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. (DOI: 10.1103/PhysRevLett.100.055901)

yearjournalcountryeditionlanguage
2008-01-01
http://hdl.handle.net/11562/315470