Liquid scintillation counter

Details Liquid scintillation counter Liquid scintillation counter

1985-10-01

1987-08-18

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250328, 250366, G01T 120

Patent

active

046879358

ABSTRACT:
The invention relates to a liquid scintillation counter comprising at least two photodetectors (2,3) for viewing a scintillation solution (1) in which both real multiphoton events and single photon events take place, and producing logic pulses and amplitude pulses in correspondence to these events, the amplitude of these amplitude pulses being a function of the number of photons that reach the photodetectors (2,3) for each of said events. According to the invention there are provided means (10) for delaying the logic pulses from one of said photodetectors, means (11) for either delaying or prolonging the amplitude pulses from the same photodetector, a coincidence analyzer for analyzing by means of the undelayed logic pulses and said delayed logic pulses whether said delayed or prolonged amplitude pulses are coincident within a predetermined coincidence resolving time with the undelayed or prolonged amplitude pulses from the other photodetector, and means for determining the number of these coincidences in a plurality of pulse amplitude intervals.

REFERENCES:
patent: 3772512 (1973-11-01), Laney
patent: 4031392 (1977-06-01), Giraud et al.
patent: 4181855 (1980-01-01), Horrocks
patent: 4418282 (1983-11-01), Horrocks

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