Abstract
The theoretical expression of the induced radioactivity of a nuclide activated by neutron reactions is basically used to develop a mathematical model and an accurate method of evaluating concentrations of elements producing γ-ray emitting isotopes, without use of standards and of neutron flux monitoring. This initial “Without Standard” method is mainly applicable to materials obtained by special or industrial technologies, when precise values of the elemental concentrations, after the synthesis process, are required. A preliminary test of the method, using a Goodfellow Metals stainless steel material irradiated in a thermal neutron field is reported. The results confirm the applicability of the “Without Standard” method to the NAA experiments for the elemental analysis of materials.
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J. HOSTE, J. Op. DE BEECK, P. GIJBELS, F. ADAMS, P. VAN DEN WINKEL, D. DE SOETE, Activation Analysis, CRC Monoscience Series, Butterworth, London, 1971.
S. R. WAGNER, Neutron Cross Sections for Reactor Dosimetry, Vol. 2, IAEA TECDOC, No. 208, IAEA, Vienna, 1978, p. 3.
A. SIMONITS, F. DE CORTE, J. HOSTE, J. Radioanal. Chem., 31 (1970) 457.
F. DE CORTE, A. SIMONITS, A. DE WISPELEARE, A. ELEK, J. Radioanal. Nucl. Chem., 133 (1989) 43.
Proc. 8th Intern. Conf. on Modern Trends in Activation Analysis, Wien 16–20 September 1991.
Proc. 1st Intern. “k 0 Users Workshop”, held at Astene (Deinze) Belgium Sept. 30–Oct. 3, 1992.
Handbook on Nuclear Activation Data, Technical Report Series No. 273 IAEA Vienna, 1987.
W. REUS, W. WESTMEIER, Atom Data Nuclear Data Tables, Vol. 2, Academic Press, New York, 1987.
Private technical specification from the Goodfellow Metals and Materials Ltd. Comp., February 1993.
Guide to the Expression of Uncertainty in Measurement, ISO/TAGY/WG3 Document, June 1992.
Em. CINCU, Nucl. Instr. Methods Phys. Res., A286 (1990) 388.
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Cincu, E., Pascovici, G. & Stoian, P. Elemental assay of materials by NA and gamma-ray spectroscopy without standards and neutron flux monitoring. Journal of Radioanalytical and Nuclear Chemistry, Articles 174, 115–126 (1993). https://doi.org/10.1007/BF02040339
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DOI: https://doi.org/10.1007/BF02040339