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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 274 (2012) 188-190
210Pbactivity by detection of bremsstrahlung in 210Bi β-decay
A. Nachab1, Ph. Hubert2

A method for the determination of the 210Pbactivity by HPGe spectrometry is proposed, consisting of measuring the bremsstrahlung generated in a sample by 210Bi β-emission (1.16 MeV). The detection efficiency is evaluated by GEANT3 simulation and is compared with experiment. A detection limit of 600 mBq was obtained. This technique has been used to select low background detector materials and lead shielding.
1 :  IPHC - Institut Pluridisciplinaire Hubert Curien
2 :  CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Physique/Physique Nucléaire Expérimentale
* γ-Spectrometry – * Lead shield – * 210Pb – * 210Bi – * Bremsstrahlung