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A method for determining Am-241 activity for large area contamination
Emilien Wilhelm1, Nicolas Arbor2, Sébastien Gutierrez1
1CEA DAM Ile de France, Bruyères-le-Châtel, 91297 Arpajon, France.
Abstract:
Airborne gamma-ray spectrometry system HELINUC™ is used for different missions. Although well-developed for estimation of high energy emitters' activity, it is rarely used for low energy emitters. A new method for the determination of Am-241 activity over extended sites based both on statistical analysis of spectra and deconvolution of Am-241 signal with a reference library is presented. Results show a lowering of the detection threshold and a good agreement with ground level measurements.
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