Dual scintillation detector for determining grade of uranium ore

A dual scintillation radiation detector apparatus which senses the quantity of two different types of radiation simultaneously in a radioactive sample in order to determine the grade of uranium ore present, said apparatus comprising:

• (a) a body housing means;
• (b) a first scintillation detector material sensitized to a first radiation;
• (c) a second scintillation radiation detector material sensitized to a second higher level radiation;
• (d) said first scintillation detector material being configured in a relatively thin cross section of both of said detector materials being arranged in contiguous position with the second detector material positioned on the opposite side of said first detector material from the source of radiation whereby the highest level energy radiation must pass through said first material to energize said second material, said first and second radiation detector materials being suitably mounted in said body housing;
• (e) sensing means coupled to a surface of each of said scintillation detector materials, said sensing means being capable of receiving the light energy created by the scintillation of the detector materials by the respective radiation whereby the light energy will be converted to electrical output signals proportional to the amount of radiation present within the scintillation detector materials;
• and
• (f) indicating means arranged to receive the output signals from said sensing means, said indicating means including means for processing the output signals from said sensing means in order to display a differential of said output signals whereby a direct indication of the grade of uranium ore present at a specific location can be obtained.

A radiation detection apparatus for determining the grade of uranium ore present at a specific location, the apparatus comprising:

• a body housing means,
• a first scintillation detector material sensitized to a first radiation;
• a second scintillation radiation detector material sensitized to a second radiation different from said first;
• said first radiation detector material being formed in the shape of a hollow cylinder having one end closed and the second scintillation detector material being positioned within the hollow cavity of said first radiation detector material and said detector materials being mounted within said body means whereby the first detector material is exposed to a source of radiation through the outer surface of said body housing means whereby the radiation passes through said first material in order to penetrate the second material;
• a pair of suitable sensing means coupled to a surface of each of said scintillation detector materials, said sensing means being capable of receiving the light energy created by the scintillation of the detector materials by the radiation whereby the light energy will be converted to electrical output signals proportional to the amount of radiation present within the respective scintillation detector materials;
• and
• indicating means arranged to receive the output signals from said sensing means, said indicating means including means for processing the output signals from said sensing means in order to display a differential of said output signals whereby a direct indication of the grade of uranium ore present at a specific location can be obtained.