| Autor: |
Berlizov, Andriy, Koskelo, Markku, McGinnis, Brent, Piketon, Carbonaro, Joseph |
| Předmět: |
|
| Zdroj: |
Journal of the Institute of Nuclear Materials Management; 2021, Vol. 49 Issue 3, p94-107, 14p |
| Abstrakt: |
The paper presents the results of the first international inter-comparison exercise on uranium and plutonium isotopic analysis using medium resolution gamma-ray spectrometers. Two phases of the exercise were conducted to enable developments, adaptation, validation and application of participant's isotopic codes. The performance of the codes was evaluated against collections of spectra taken from reference and well-characterized samples. The assessments of participant's results provided estimates of random, systematic and combined uncertainties, which were interpreted in terms of the compliance, feasibility and applicability to safeguards applications, as well as provided a basis for participant-to-participant comparisons. The analysis showed that extracting reliable isotopic information from the 80--120 keV region, which is conventionally used for uranium and plutonium isotopic analysis in high resolution gamma spectrometers, was not feasible using medium resolution detectors. In addition, the evaluation of the reported results revealed problems in adequate uncertainty estimations for both Cadmium Zinc Telluride and Lanthanum Bromide detectors. Nevertheless, it is evident that medium resolution gamma spectrum analysis has potential for safeguards applications involving both partial and gross defect verification scenarios. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
