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Measurement of the absolute gamma-ray emission intensities from the decay of $^{103}$Pd

Jonathan Riffaud 1 Marie-Christine Lépy 1, * Philippe Cassette 1 Margot Corbel 1 Mark Kellett 1 Valérie Lourenço 1
* Corresponding author
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Palladium-103 decays through electron capture to excited levels of $^{103}$Rh, and especially to the 39.748-keV metastable state. A high activity palladium chloride solution was standardized by liquid scintillation, using the Triple-to-Double Coincidence Ratio method. The absolute photon emission intensities were determined by gamma-ray spectrometry using point sources prepared with the standard solution. Different detectors and measuring conditions were used to cross-reference the results. The most intense photon emission intensities are derived with about 1% relative combined standard uncertainty.
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https://hal-cea.archives-ouvertes.fr/cea-03044305
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Submitted on : Tuesday, December 8, 2020 - 4:30:25 PM
Last modification on : Wednesday, November 17, 2021 - 2:36:26 PM
Long-term archiving on: : Tuesday, March 9, 2021 - 7:51:49 PM

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Jonathan Riffaud, Marie-Christine Lépy, Philippe Cassette, Margot Corbel, Mark Kellett, et al.. Measurement of the absolute gamma-ray emission intensities from the decay of $^{103}$Pd. Applied Radiation and Isotopes, Elsevier, 2021, 167, pp.109298. ⟨10.1016/j.apradiso.2020.109298⟩. ⟨cea-03044305⟩

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