Atomic environments in iron meteorites using EXAFS (Extended X-ray Absorption Fine Structure).

Details Atomic environments in iron meteorites using EXAFS (Extended X-ray Absorption Fine Structure). Atomic environments in iron meteorites using EXAFS (Extended X-ray Absorption Fine Structure).

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iaus..135p.455c&link_type=abstract

IAU Symposium No. 135: Interstellar dust: contributed papers, p. 455 - 461

Physics

Iron Meteorites: Atomic Spectra

Scientific paper

Extended X-ray Absorption Fine Structure (EXAFS) is observed as a modulation on the high energy side of an X-ray absorption edge. It occurs when the photo-ejected electron wave is scattered by neighbouring atoms in a solid, and interference occurs between the outgoing and scattered waves. The result is that the absorption spectrum carries a signature that is characteristic of the identity and disposition of scattering atoms around the absorbing atom. An analysis of EXAFS can therefore provide detailed information about the immediate environment of specific atoms in a solid and is ideally suited to the study of cosmic dusts.

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