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, 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.
References
Coursey BM, Vaninbroukx R, Reher D, Hutchinson JMR, Mullen PA, Debertin K, Gehrke RJ, Rogers JW, Koeppen LD, Smith D (1990) The standardization of 93mNb for use as a reference material for reactor neutron dosimetry. Nucl Ins Methods Phys Res Sect A: Accel, Spectrom, Det Assoc Equip 290:537–550. https://doi.org/10.1016/0168-9002(90)90574-P
Ichikawa M, Tanaka S, Chatani K (2023) Fast neutron fluence estimation by measurement of 93mNb and 93Mo. EPJ Web Conf 278:01004. https://doi.org/10.1051/epjconf/202327801004
Espartero AG, SuárezRodrı́guez M JA (1998) Determination of 93mNb and 94mNb in medium and low level radioactive wastes. Appl Radiat Isot 49:1277–1282
Baers LB, Hasanen EK (1994) ASTM Spec Tech Publ 1228:205–214
Serén T, Kekki T (2003) Retrospective dosimetry based on niobium extraction and counting - VTT's RETROSPEC project, ESPOO 2003, VTT Research Notes 2203: 7–36. https://www.vttresearch.com/sites/default/files/pdf/tiedotteet/2003/T2203.pdf
Ungerer MJ, Van der Westhuizen DJ, Lachmann G, Krieg HM (2013) Separation of tantalum and niobium by solvent extraction, MSc Thesis, Northwest University, Potchefstroom Campus http://hdl.handle.net/10394/9850
Paulus W et al (1998) Extraction of the fluoride-, chloride- and bromide complexes of the elements Nb, Ta, Pa and 105 into aliphatic amines. J Alloy Compd 271–273:292–295
Rhoades WA, Simpson DB (1997) The TORT three-dimensional discrete ordinates neutron/photon transports code (TORT version 3) United States. https://doi.org/10.2172/582265
Trkov A et al. (2014) International Reactor Dosimetry and Fusion File IRDFF v.1.05 (Cross-section data supersede IRDF-2002 and all previous versions of IRDFF)
Hoffmann J (1988) Experience with the sources of contamination when preparing samples for the analysis of trace elements. Fresenius Z Anal Chem 331:220–222
Broda R, Cassette P, Kossert K (2007) Radionuclide metrology using liquid scintillation counting. Metrologia 44:S36. https://doi.org/10.1088/0026-1394/44/4/S06
Osváth S, Vajda N, Molnár Z (2008) Determination of long-lived Nb isotopes in nuclear power plant wastes. Appl Radiat Isot 66(1):24–27
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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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