Method and circuit arrangement for reducing the background count

Details Method and circuit arrangement for reducing the background count Method and circuit arrangement for reducing the background count

1987-10-19

1989-06-06

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

25036301, 250369, G01T 1164

Patent

active

048374377

ABSTRACT:
A method for reducing the background count rate in radioactivity measurements with a coincidence-anticoincidence evaluation, in which pulses from a detector and pulses from a shield counter device are amplified and compared based on a time relationship, reduces the zero sample counter rate of the detector by supplying the amplified pulses to analog/digital converters which convert the pulses to digital values at a predetermined clock frequency. When a detection pulse is identified, digital values are transferred to a PC system. In the PC system the height, shape, or slope of the detector pulses is compared to the height, shape, or slope of any contemporaneous pulse from the shield counter device. Circuitry for performing the method is also disclosed.

REFERENCES:
patent: 4651006 (1987-03-01), Valenta
H. H. Loosli et al., "BACKGROUND MEASUREMENTS WITH DIFFERENT SHIELDING AND ANTICOINCIDENCE SYSTEMS", Radiocarbon, vol. 28, No. 2A, (1986), pp. 615-622.

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