Determination of uranium in rocks by instrumental activation-analysis using epithermal neutrons.
A rapid non-destructive neutron-activation method for the determination of uranium in rocks is described. The method is based on activation with epithermal neutrons and subsequent measurement of the 74 keV gamma-ray of (239)U. Results given for some standard rocks are in good agreement with literature data. The precision of the method is about 5 % and the limit of detection is of the order of 0.1 ppm in silicate rocks.
Steinnes
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Institutt for Atomenergi, Isotope Laboratories, Kjeller, Norway.
Brune
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