AI Article Synopsis
- Atomic and nuclear data are crucial for accurate measurements in liquid scintillation, particularly for β-spectrum calculations.
- This study focuses on standardizing the activity of two β-emitting radionuclides (Co and Ru/Rh) using 4πβ-γ coincidence and TDCR methods.
- The results indicate that including atomic effects in the β-spectra improves agreement between the two measurement techniques, and a new stochastic model using Geant4 simulations for TDCR calculations is introduced.
Article Abstract
Atomic and nuclear data represent an important input for the accuracy of primary activity measurements based on liquid scintillation. In particular, the reliability of β-spectrum computation has been investigated for several years through experimental and theoretical studies providing solid evidence for the need to consider the atomic effects. In the present study, the activity standardization of two β-emitting radionuclides (Co, Ru/Rh) was carried out by means of the 4πβ-γ coincidence and Triple-to-Double Coincidence Ratio (TDCR) methods. The comparison between the activity concentrations given by both primary techniques presents new evidence that a better agreement is obtained when the exchange and screening effects are included in the β-spectra implemented in the model of light emission for TDCR measurements. A new development of a stochastic model based on Geant4 simulations for TDCR calculations is also presented.
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| http://dx.doi.org/10.1016/j.apradiso.2023.110993 | DOI Listing |
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