Method of measuring the disintegration rate of beta-emitting rad

Details Method of measuring the disintegration rate of beta-emitting rad Method of measuring the disintegration rate of beta-emitting rad

1976-06-14

1977-11-29

Dixon, Harold A.

Radiant energy

Automatic/serial detection of similar sources

250363R, G01T 100

Patent

active

040607283

ABSTRACT:
A method of measuring the disintegration rate of a beta-emitting radionuclide in a liquid sample by counting at least two differently quenched versions of the sample. In each counting operation the sample is counted in the presence of and in the absence of a standard radioactive source. A pulse height (PH) corresponding to a unique point on the pulse height spectrum generated in the presence of the standard is determined. A zero threshold sample count rate (CPM) is derived by counting the sample once in a counting window having a zero threshold lower limit. Normalized values of the measured pulse heights (PH) are developed and correlated with the corresponding pulse counts (CPM) to determine the pulse count for a normalized pulse height value of zero and hence the sample disintegration rate.

REFERENCES:
patent: 3721824 (1973-03-01), Bristol

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