G - Physics – 01 – T
Patent
G - Physics
01
T
358/5
G01T 1/167 (2006.01) G01T 1/202 (2006.01)
Patent
CA 1164579
ABSTRACT There is described a method of and apparatus for measuring radio- active emissions from moving radio-active material. Use is made of at least one radiation detector, a housing serving as a first radiation shield of a first material which shields the detector, and a second radiation shield which is located between at least a portion of the first shield and the detector. The material of the second shield is inherently less contaminated and emits secondary excitation radiation of lower energy than the first material. An opening is formed in the housing material to expose at least a portion of a receptor surface of the detector. A conveyor transports the radio-active material past the unshielded receptor surface and the radio-active emissions are detected and counted.
425134
Bohme Rolf C.
Lazerson Max M.
Fetherstonhaugh & Co.
General Mining Union Corporation Limited
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