An absolute method for performing neutron-activation analysis of large oil samples is presented. Software has been developed for performing a Monte Carlo calculation (based on nuclear-physical data in the ENDF and ENSDF format) of the distribution of the neutron flux and activation of the analyte nuclides in large samples. A method and software have been developed for calculating the detection efficiency for γ-rays from a large sample by a planar detector. The coefficient α of deviation of the epithermal neutron flux from the 1/E law is determined to be α = 0.023. The content of 38 elements in samples of raw oil samples from a deposit in Eastern Siberia in the concentration range from 10–9 to 0.5% is determined.
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Translated from Atomnaya Énergiya, Vol. 116, No. 2, pp. 89–95, February, 2014.
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Zinov’ev, V.G., Mitropol’skii, I.A., Loginov, Y.E. et al. Computational Methods for Neutron-Activation Analysis of Large Oil Samples. At Energy 116, 116–124 (2014). https://doi.org/10.1007/s10512-014-9828-x
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DOI: https://doi.org/10.1007/s10512-014-9828-x