Abstract
Experiments were performed to determine the distribution of activity along a fuel element from the RFT reactor. It was shown that the dRtrtbutton of activity is satisfactorily described by a cosine function, and that the formulas used to compute the dose rate field of an irradtator with uniformly distributed activity along the radiation source are inapplicable to radiators consisting of fuel elements (the disagreement was 23% for the RFT and 32% for the First Atomic Power Station). Better agreement was obtained between experimental data and values computed by our formulas.
An experimental and theoretical study was made of the dose rate field from a single fuel element and from a hollow, cylindrical irradiator made up of eighteen RFT fuel elements. Working formulas were obtained for computing the dose rate field from spent fuel elements. In computing the dose rate field inside a hollow, cylindrical irradiator made of fuel elements of finite diameter, it was shown that the activity can be considered to be distributed according to a cosine law over the surface of an infinitely thin cylinder with a radius equal to the arithmetic mean of the minimum and maximum radii of the irradiator.
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Translated from Atomnaya Énergiya, Vol. 19, No. 4, pp. 367–371, October, 1965
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Drozdov, V.E., Zakharova, I.M. & Dobrovol'skii, S.P. A study of the dose-rate field in an irradiator with γ-ray source consisting of spent reactor fuel elements. At Energy 19, 1301–1306 (1965). https://doi.org/10.1007/BF01163836
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DOI: https://doi.org/10.1007/BF01163836