Riffaud J, Lépy M-C, Cassette P, Corbel M, Kellett M A, Lourenço V
CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât. 602 PC 111, CEA-Saclay, 91191, Gif-sur-Yvette Cedex, France.
CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât. 602 PC 111, CEA-Saclay, 91191, Gif-sur-Yvette Cedex, France.
Appl Radiat Isot. 2021 Jan;167:109298. doi: 10.1016/j.apradiso.2020.109298. Epub 2020 Sep 20.
Palladium-103 decays through electron capture to excited levels of 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.