Photon emission intensities in the decay of U-235

Marie-Christine Lepy 1, * Sylvie Pierre 1 Raf van Ammel 2 Maria Marouli 2
* Corresponding author
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : New measurements of photon emission intensities in the decay of U-235 were performed. Source was prepared by deposition of a U-235 solution on glass plate. Standardization was carried out by defined solid angle alpha counting, giving the reference activity with 0.7% relative combined uncertainty. Gamma spectrometry was performed with accurately calibrated high-purity germanium detectors. Corrections for source geometry and coincidence summing effects were applied. The reference line (185.72 keV) intensity was obtained with 1.3% relative standard uncertainty.
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Marie-Christine Lepy, Sylvie Pierre, Raf van Ammel, Maria Marouli. Photon emission intensities in the decay of U-235. Applied Radiation and Isotopes, Elsevier, 2017, 126, pp.150-153. ⟨10.1016/j.apradiso.2016.12.045⟩. ⟨cea-01799864⟩



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