Measuring water content by neutron thermalization

Details Measuring water content by neutron thermalization Measuring water content by neutron thermalization

G - Physics

01

N

G01N 23/02 (2006.01) G01N 23/204 (2006.01)

Patent

CA 2055201

Abstract of the Disclosure A vessel for receiving a test sample of fluid whose water content is to be determined and a thermal neutron sensor are retained in cavities of a biological radioactivity shield. The cavities are lined with a material which blocks external thermal neutrons outside the test sample from being detected by the thermal neutron sensor. Another cavity, having an inner end terminated by the lining material, receives a source of fast neutrons which are to be emitted through the liner into the test sample to become thermal neutrons if they interact with hydrogen within the test sample. The latter thermal neutrons which are backscattered to the sensor are detected, and in response an electrical signal encoded to represent the count of detected thermal neutrons is generated to indicate a measure of the water content of the test sample.

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