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

Volume

43

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

1381

Lastpage

1384

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.507070

Filename

507070