Fabrication and calibration of new carbon-14 reference standards using irradiated graphite from uranium–graphite reactors

The paper deals with measurements of carbon-14 in irradiated nuclear graphite. It suggests approaches to the problem, impart experience in production and calibration of new C-14, reference standards got from irradiated elements (sleeve, block) of the uranium–graphite reactor (UGR) stacks. Reference...

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Bibliographic Details
Published in:	Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 1003; p. 165350
Main Authors:	Pavliuk, A.O., Kotlyarevsky, S.G., Kan, R.I., Gorshkov, V.B., Maksimova, I.M., Volkova, A.G., Zakharova, E.V., Stepanov, A.V., Volkovich, A.G., Simirsky, Yu.N., Dushin, V.N., Alekseev, I.E., Merkulov, V.G., Tchibisov, E.V., Kabanov, D.V.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-07-2021
Subjects:	Application of reference standards C-14 reference standard Interlaboratory comparisons Irradiated graphite Measuring instrument Measuring instrument Application of reference standards Interlaboratory comparisons Irradiated graphite C-14 reference standard
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Summary:	The paper deals with measurements of carbon-14 in irradiated nuclear graphite. It suggests approaches to the problem, impart experience in production and calibration of new C-14, reference standards got from irradiated elements (sleeve, block) of the uranium–graphite reactor (UGR) stacks. Reference standards in the form of irradiated graphite were created and certified by the C-14 concentration. The concentration of C-14 in different samples was determined by interlaboratory comparisons. Results of the work proved an opportunity of creating reference materials for the C-14 radionuclide based on irradiated graphite obtained from the graphite elements of the uranium–graphite reactors. C-14 reference standards with different concentrations of interfering Cl-36, Co-60, H-3, Cs-137, Sr-90 and other radionuclides can be used for future development of new methods of determination the C-14 concentration in irradiated graphite and spectrometric equipment calibration.
ISSN:	0168-9002 1872-9576
DOI:	10.1016/j.nima.2021.165350