DOE OSTI · 3382412
Accelerated 133 Xe Quantification in Samples Containing Significant 133 mXe
Abstract
The quantification of 133 Xe in the presence of its mother radionuclide 133 mXe requires the full quantification of both to perform the ingrowth correction for 133 Xe. Due to the nature of both of these radionuclides, the 133 mXe requires significantly more time to quantify by High Purity Germanium (HPGe) detectors due to lower production yields, lower gamma emission probabilities, and lower detection efficiencies. This work shows that 133 Xe and 133 mXe quantification can be accelerated by measuring the 133m:133 activity ratio for a large batch of material and applying this activity ratio to assays of lower activity subsamples of the same batch of material. Included in this report are derivations of the required decay correction equations, and experiments using actual samples to validate the performance of these equations. A detector calibration method is also shown that leverages this method as an alternative to existing calibration methods for 133 mXe quantification.
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Robinson, Troy A. [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:000000015317482X). 2026-06-01. Accelerated 133 Xe Quantification in Samples Containing Significant 133 mXe. https://doi.org/10.2172/3382412
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