Method and apparatus for the classification of particles by irradiation with a neutron beam

Kimberlite particles 16 to be examined for the presence of diamonds 36 are irradiated with a beam 20 of fast neutrons at a resonant energy level for diamond. For each particle an image is derived which is representative of transmission of the beam by the particle by using a scintillator screen 24 an...

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Bibliographic Details
Main Authors ULF ANDERS STAFFAN TAPPER, JOHN IVOR WILLIAM WATTERSON, HEIDAR RAHMANIAN, JACEK GUZEK
Format Patent
LanguageEnglish
Published 23.07.1997
Edition6
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
PHYSICS
TESTING
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Summary:Kimberlite particles 16 to be examined for the presence of diamonds 36 are irradiated with a beam 20 of fast neutrons at a resonant energy level for diamond. For each particle an image is derived which is representative of transmission of the beam by the particle by using a scintillator screen 24 and a CCD camera 32. The particles are then classified according to whether or not the derived image is indicative of the presence of diamond in the particle. The method may be enhanced by irradiating the particles with neutron beams at resonant and non-resonant energy levels and forming a resultant image by subtracting one image from the other.
Bibliography:Application Number: GB19940026049