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Comparison of niobium-93m results obtained by two independent destructive analytical procedures and measured by low energy gamma spectrometry and liquid scintillation counting

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Abstract

This article presents two newly developed radiochemical procedures for the destructive analysis of niobium plates irradiated in the core of water-water energetic nuclear reactor (WWER), as well as determination of the specific activity of the generated during the irradiation metastable isotope 93mNb. The procedures were developed and tested using standard samples containing 93mNb and 94Nb. Measurements were made by low energy gamma spectrometry (LEGS) and liquid scintillation counting (LSC) and the obtained data were verified by interlaboratory comparison. All the results were compared with the calculated ones to confirm and evaluate the accuracy and superiority of the two measurement methods.

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Data availability

Data, supporting this study are not publicly available in its full range, because it represents sensitive information about the safety operation of the nuclear power plant. For more information you can contact to ldobrev@inrne.bas.bg.

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Acknowledgements

This research was supported by the Bulgarian National Science Fund, contract number КП-06-H39/14 (12.12.2019) “Research of new approaches in the activation analysis and radiochemistry of technogenic radionuclides important for man and environment.” In memoriam of Dobromir Dimitrov, whose dedicated work was a major part from the successful completion of this article.

Funding

This work was supported by the Bulgarian National Science Fund under contract number КП-06-H39/14 (12.12.2019) “Research of new approaches in the activation analysis and radiochemistry of technogenic radionuclides important for man and environment.”

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Correspondence to Lyuben Dobrev.

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Dobrev, L., Dimitrov, D., Mitev, M. et al. Comparison of niobium-93m results obtained by two independent destructive analytical procedures and measured by low energy gamma spectrometry and liquid scintillation counting. J Radioanal Nucl Chem 333, 297–304 (2024). https://doi.org/10.1007/s10967-023-09236-1

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  • DOI: https://doi.org/10.1007/s10967-023-09236-1

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