Applications of synchrotron X-ray fluorescence to extraterrestrial materials

Details Applications of synchrotron X-ray fluorescence to extraterrestrial materials Applications of synchrotron X-ray fluorescence to extraterrestrial materials

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nimpb..24..405s&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section B, Volume 24, p. 405-409.

Physics

3

Scientific paper

Synchrotron X-ray fluorescence (SXRF) is a valuable technique for trace element analysis of extraterrestrial materials permitting minimum detection limits less than 1 ppm for 20 μm spots. SXRF measurements have been performed on iron meteorites and micrometeorites using white synchrotron radiation and an energy dispersive X-ray detector at the National Synchrotron Light Source (X-26C), Brookhaven National Laboratory (NY). Partitioning of Cu between troilite (FeS) and metal in the nine iron meteorites studied suggests subsolidus re-equilibration in these objects. A technique has been developed for determining self-absorption corrections for filtered, continuum excitation of small specimens, such as stratospheric particles and refractory inclusions in meteorites.

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