Method and apparatus for determining random coincidence count ra

Details Method and apparatus for determining random coincidence count ra Method and apparatus for determining random coincidence count ra

1981-06-29

1983-11-29

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250328, G01T 120

Patent

active

044182821

ABSTRACT:
A method and related apparatus for the determination of a random coincidence count attributable to chance coincidences of single-photon events which are each detected in only a single detector of a scintillation counter utilizing two detectors in a coincidence counting technique. Real and apparent coincidences of pulses are accumulated in a first counting device (28), and all pulses from the detectors (12) are accumulated in a second counting device (38), without regard for coincidence in time. The two counting devices are monitored during at least one random coincidence monitoring time occurring simultaneously with part of a sample counting period. The length and frequency of occurrence of the random coincidence monitoring times can be selected for particular counting measurement applications.

REFERENCES:
patent: 3772512 (1973-11-01), Laney
patent: 4031392 (1977-06-01), Giraud et al.
patent: 4071761 (1978-01-01), Horrocks
patent: 4181855 (1980-01-01), Horrocks

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