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The objective of this research was to evaluate a new analytical technique to improve the radionuclide activity estimate from area measurements of small-area spectral peaks obtained using multi-channel spectrometry. These improvements are based on the application of Bayesian peak fitting, a method of peak fitting that allows the information contained in a spectrum to be used more fully than is possible with the method of gross counting currently employed. The study carried out showed that activity estimates and confidence intervals for activity could be more precisely defined, and the time-related costs reduced up to 50% when making activity measurements by the peak-fitting method (for a fixed detection limit) instead of gross counting. Testing of the method under real conditions would be the logical follow-up to the work achieved.

Additional information

Authors: GRAY P W, Imperial College Reactor Centre, Silwood Park, Ascot, Berkshire SL5 7PY (GB)
Bibliographic Reference: EUR 12183 EN (1989) FS, 132 pp., ECU 11.25
Availability: (2)
ISBN: ISBN 92-825-9994-9;CD-NA-
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