Determination of uranium content in material

Details Determination of uranium content in material Determination of uranium content in material

1977-10-20

1979-06-19

Smith, Alfred E.

Radiant energy

Geological testing or irradiation

With sampling

250435, 250510, G01V 500, G01N 2124, G21K 300

Patent

active

041587693

ABSTRACT:
The content of uranium, in a solution, as extracted from uranium ore by a solution mining technique for example, is determined by measuring the intensity of selected gamma or X radiation emitted by the solution. The gamma or X radiation is preferably derived from the thorium-234 daughter of uranium 238. The radiation from the solution impinges on a scintillator after being passed successively through K-edge filter foils of an alloy of ytterbium (e.g. with tin), an alloy of lutecium (e.g. with tin), and an alloy of hafnium (e.g. with zirconium). The resulting scintillation counts of the scintillator with the filter foils are arithmetically processed so that the scintillation derived from the thorium-234 63 KeV line is isolated. This scintillation is evaluated as a measure of the uranium content. To assure that the uranium thorium conversion has reached a stable state, the measurement should be made about three months after the uranium solution is produced.

REFERENCES:
patent: 3002091 (1961-09-01), Armstrong
patent: 3158741 (1964-11-01), Skvarla
patent: 3825751 (1974-07-01), Johnson, Jr. et al.
patent: 3849655 (1974-11-01), Martucci
patent: 3988615 (1976-10-01), Umbarger et al.
patent: 4006358 (1977-02-01), Howarth
patent: 4055764 (1977-10-01), Dimeff

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