1. Ytterbium-175 half-life determination
- Author
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Claude Bailat, Thierry Stora, Youcef Nedjadi, François Bochud, Zeynep Talip, M. Teresa Durán, Ulli Köster, Frédéric Juget, Charlotte Duchemin, and Nicholas P. van der Meulen
- Subjects
Physics ,Radionuclide ,Spectrum analyzer ,Radiation ,Analogue electronics ,Nuclear engineering ,Detector ,Nuclear data ,010403 inorganic & nuclear chemistry ,01 natural sciences ,0104 chemical sciences ,Metrology ,010309 optics ,Neutron capture ,0103 physical sciences ,Ionization chamber - Abstract
$^{175}$Yb is a radionuclide that can be generated by neutron capture on $^{174}$Yb and whose decay properties make it useful for developing therapeutic radiopharmaceuticals. As it happens with many of the emerging radionuclides for medical uses in recent years, its nuclear data were determined decades ago and are not thoroughly documented nor accurate enough for metrological purposes. The last documented reference for the $^{175}$Yb half-life value is 4.185(1) days and dates back to 1989, so a redetermination of the value was considered appropriate before standardization at the Institute of Radiation Physics (IRA, Lausanne, Switzerland) primary measurements laboratory. Three independent measurement methods were used to this purpose: reference ionization chamber (CIR, $chambre$ $d'ionization$ $de$ $référence$), CeBr$_{3}$ γ-ray detector with digital electronics and a second CeBr$_{3}$ detector with analog electronics and single-channel analyzer (SCA) counting. The value obtained for the $^{175}$Yb half-life is 4.1615(30) days which shows a 0.56% relative deviation to the last nuclear reference value (ENSDF 2004) and is supported with a detailed calculation of the associated uncertainty.
- Published
- 2021