title: Standardization of Sm-153 solution by absolute methods.
abstract: Standardization of (153)Sm by 4π(LS)-γ coincidence and anticoincidence counting and the CIEMAT/NIST method in three LS-counters is presented. This short half-life radionuclide is applied in tumor therapy and bone pain palliation. A simplified disintegration scheme of (153)Sm was applied in the calculation of the counting efficiency. Standard uncertainties of 0.4% for the (153)Sm measurements by the 4π(LS)-γ coincidence and anticoincidence techniques and 0.7% by the C/N method were evaluated, respectively. An agreement of the standardization results by both methods within the respective uncertainties was obtained. The half-life of (153)Sm of (1.92895±0.00024) days was determined during one month of measurements and correction for europium isotope impurities by the C/N method in the TriCarb 2910 LS-counter.
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: T
authors: T
authors: Dziel
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland. Electronic address: r.broda@polatom.pl.
authors: R
authors: R
authors: Broda
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: T
authors: T
authors: Ziemek
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: A
authors: A
authors: Muklanowicz
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: A
authors: A
authors: Listkowska
mesh_terms: D006207:Half-Life; D006801:Humans; D012015:Reference Standards; D012493:Samarium / Q000032:analysis* / Q000493:pharmacokinetics / Q000592:standards; D012996:Solutions; D035501:Uncertainty
chemical_list: D012996:Solutions; D012493:Samarium
keywords: CIEMAT/NIST; Coincidence and anticoincidence; Counting efficiency; Half-life; Liquid scintillation counting; Sm-153