The Application of X-Ray Fluorescence in Meteorite Investigation.

Details The Application of X-Ray Fluorescence in Meteorite Investigation. The Application of X-Ray Fluorescence in Meteorite Investigation.

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..mar.h5016s&link_type=abstract

American Physical Society, Annual March Meeting, March 17-22, 1996, abstract #H50.16

Physics

Scientific paper

The project explored the use of X-Ray Fluorescence (XRF) in determining the composition and classification of meteoritic samples. Radioactive sources of Fe-55, Cm-244, and Am-241 were used to fluoresce the meteorite samples. A liquid nitrogen cooled ORTEC Si(Li) detector, with a 0.3 mil Be window, was used to detect the photons fluoresced from the sample. The data was collected and analyzed by a pentium based PCA III data acquisition system. Efficiency of the detector was determined by (i) measuring calibrated radioactive sources and by (ii) determining the attenuation of photons through the various layers of the detector. Determining the suitability of source and duration of fluorescence was an important part of detecting trace elements present in the meteorite samples. The Fe-55 source was found to be the best source to detect the silicates present in stony meteorites. While the Cm-244 source was found to be the best at detecting iron and nickel in the iron meteorites.

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