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Measurement of the absolute gamma-ray emission intensities from the decay of 147Nd

Mark Kellett 1 L. Vio 2 Christophe Bobin 1 Laurine Brondeau 1 Mikael Cardot-Martin 1 H. Isnard 2 Lacour Daniel 1 Marie-Christine Lépy 1 Valérie Lourenço 1 M. Marie 2 Cheick Thiam 1
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
2 LANIE - Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire
SEARS - Service d'études analytiques et de réactivité des surfaces : DEN/DPC
Abstract : The 2011 Decay Data Evaluation Project (DDEP) evaluation for 147Nd includes recommended absolute emission intensities for the two main gamma-rays at 91.105 (2) keV and 531.016 (22) keV of 0.284 (18) and 0.127 (9) respectively, i.e. with uncertainties of 6.3% and 7.1%. These large uncertainties stem from inconsistencies in the published data and are unfit for modern purposes, since the production of 147Nd is used as an important neutron flux dosimeter. The LNE-LNHB has undertaken new absolute gamma-ray emission intensity measurements. The results of these measurements will be presented, along with a full uncertainty budget, and their effect on the recommended data uncertainties will be discussed.
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https://hal-cea.archives-ouvertes.fr/cea-03043636
Contributor : Marie-France Robbe <>
Submitted on : Monday, December 14, 2020 - 6:49:26 PM
Last modification on : Friday, June 25, 2021 - 10:30:01 AM
Long-term archiving on: : Monday, March 15, 2021 - 8:15:18 PM

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Mark Kellett, L. Vio, Christophe Bobin, Laurine Brondeau, Mikael Cardot-Martin, et al.. Measurement of the absolute gamma-ray emission intensities from the decay of 147Nd. Applied Radiation and Isotopes, Elsevier, 2020, 166, pp.109349. ⟨10.1016/j.apradiso.2020.109349⟩. ⟨cea-03043636⟩

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