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

1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Palladium-103 is a radioisotope of interest in medical applications which is used in brachytherapy implants for the treatment of prostate cancer. It decays through electron capture to excited levels of $^{103}$Rh, and especially to the 39.756 keV metastable state. The half-life of $^{103}$Pd was measured by gamma-ray spectrometry on a HPGe detector on an aliquot of the diluted solution, for 50 days. The absolute photon emission intensities were obtained by gamma-ray spectrometry using a solution whose mass activity was obtained by liquid scintillation, using the TDCR method. The full-energy peak efficiency of the detectors were previously calibrated with LNE-LNHB standard sources. The 357-keV photon emission intensity per 100 disintegrations obtained is 0.02464(16), in perfect agreement with the tabulated data (0.0246 (6)), and with a reduced uncertainty. In addition, the emission intensities of five other gamma-rays was also derived with a significant reduction of the uncertainties.
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Poster communications
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https://hal-cea.archives-ouvertes.fr/cea-03044492
Contributor : Marie-France Robbe Connect in order to contact the contributor
Submitted on : Tuesday, December 8, 2020 - 1:35:07 PM
Last modification on : Monday, December 13, 2021 - 9:15:02 AM
Long-term archiving on: : Tuesday, March 9, 2021 - 7:21:26 PM

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• HAL Id : cea-03044492, version 1

### Citation

Jonathan Riffaud, Philippe Cassette, Margot Corbel, Marie-Christine Lepy, Valérie Lourenço, et al.. Measurement of the absolute gamma-ray emission intensities from the decay of $^{103}$Pd. IRCM 2019 - 22nd International Conference on Radionuclide Metrology and its Applications, May 2019, Salamanca, Spain. ICRM technical series on radionuclide metrology, ISSN: 2522-4328, 167, pp.111, 2021, Proceedings of the 22nd International Conference on Radionuclide Metrology and its Applications (ICRM 2019). ⟨cea-03044492⟩

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