1. Primary standardization of 212 Pb activity by liquid scintillation counting.
- Author
-
Bergeron DE, Cessna JT, Fitzgerald RP, Laureano-Pérez L, Pibida L, and Zimmerman BE
- Subjects
- Radioisotopes, Tritium analysis, Reference Standards, Scintillation Counting methods, Lead
- Abstract
An activity standard for
212 Pb in equilibrium with its progeny was realized, based on triple-to-double coincidence ratio (TDCR) liquid scintillation (LS) counting. A Monte Carlo-based approach to estimating uncertainties due to nuclear decay data (branching ratios, beta endpoint energies, γ-ray energies, and conversion coefficients for212 Pb and208 Tl) led to combined standard uncertainties ≤ 0.20 %. Confirmatory primary measurements were made by LS efficiency tracing with tritium and 4παβ(LS)-γ(NaI(Tl)) anticoincidence counting. The standard is discussed in relation to current approaches to212 Pb activity calibration. In particular, potential biases encountered when using inappropriate radionuclide calibrator settings are discussed., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: All authors report financial support and equipment, drugs, or supplies were provided by Orano Med LLC. Denis E. Bergeron is Editor-in-Chief of Applied Radiation and Isotopes. Brian E. Zimmerman is former Editor-in-Chief and a Consulting Editor for Applied Radiation and Isotopes., (Published by Elsevier Ltd.)- Published
- 2022
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