Title :
A simple, powerful 4πβ/γ coincidence system
Author :
Bouchard, Jacques ; Chauvenet, Bruno
Author_Institution :
Lab. Primaire des Rayonnements Ionisants, CEA, Centre d´´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France
fDate :
6/1/1996 12:00:00 AM
Abstract :
A simple and powerful 4πβ/γ coincidence system which uses extendible dead-times and a common channel instead of a coincidence channel is described. All the major problems (dead-time, accidental coincidences corrections) encountered in conventional systems are eliminated. An important feature of this system is its insensitivity to the delay between beta and gamma pulses. The activity measurement of a radionuclide having a delayed state such as 85Sr (1 μs) becomes then very simple. An analog-to-digital converter (ADC) incorporated in one channel allows the recording of a complete spectrum. This instrument has been tested by the measurement of 60Co sources previously measured by another system. The result of the activity determination of a 85Sr solution is also presented
Keywords :
analogue-digital conversion; beta-ray detection; cobalt; coincidence circuits; coincidence techniques; detector circuits; gamma-ray detection; nuclear electronics; radioisotopes; strontium; 4πβ/γ coincidence system; 60Co sources; 85Sr; 85Sr solution; Co; Sr; accidental coincidences; activity determination; activity measurement; analog-to-digital converter; beta pulse; common channel; extendible dead-times; gamma pulse; radionuclide; Counting circuits; Delay; Event detection; Gamma ray detection; Gamma ray detectors; Jitter; Niobium; Pulse measurements; Pulse shaping methods; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
