Device for assaying uranium and/or thorium in ore specimens comprising gold foil for suppressing compton background

摘要

A device for assaying uranium and/or thorium present in ore specimens in concentrations above approximately 20 ppm according to the energy dispersive X-ray fluorescence technique, including a support for holding an ore specimen and a gamma source detector system located below the support and including a source for directing gamma radiation into the specimen in order to excite radiation containing X-ray K-lines, and a detector for detecting the X-ray K-lines of such radiation.