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A method and setup for studying the energy dependence of delayed neutron characteristics in nuclear fission induced by neutrons from the T(p, n), D(d, n), and T(d, n) reactions

  • Nuclear Experimental Technique
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Abstract

A method and a setup based on this method are described, with which it has for the first time become possible to measure the energy dependence of the absolute total and relative yields of delayed neutrons and the half-fives of their precursors from neutron-induced fission of heavy nuclei in the course of one experiment. T(p, n)3He, D(d, n)3He, and T(d, n)4He nuclear reactions induced by high-energy charged-particle beams from the KΓ-2.5 electrostatic accelerator at the Institute of Physics and Power Engineering are used as sources of monoenergetic neutrons. The measured total delayed neutron yields from neutron-induced fission of 233U and 239Pu nuclei in the energy range of 0.37–4.7 MeV, as well as the relative yields of delayed neutrons and the half-lives of their precursors from neutron-induced fission of 239Pu in the range of 15.8–17.9 MeV, are presented as an illustration of the method. The uncertainties of the data obtained by means of this method are shown to be significantly lower than the uncertainties of similar data measured using other techniques.

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Authors and Affiliations

  1. Institute of Physics and Power Engineering, pl. Bondarenko 1, Obninsk, Kaluga oblast, 249033, Russia

    V. M. Piksaikin, N. N. Semenova, V. I. Mil’shin, V. A. Roshchenko & G. G. Korolev

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  1. V. M. Piksaikin
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  2. N. N. Semenova
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  3. V. I. Mil’shin
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  4. V. A. Roshchenko
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  5. G. G. Korolev
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Original Russian Text © V.M. Piksaikin, N.N. Semenova, V.I. Mil’shin, V.A. Roshchenko, G.G. Korolev, 2006, published in Pribory i Tekhnika Eksperimenta, 2006, No. 6, pp. 29–42.

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Piksaikin, V.M., Semenova, N.N., Mil’shin, V.I. et al. A method and setup for studying the energy dependence of delayed neutron characteristics in nuclear fission induced by neutrons from the T(p, n), D(d, n), and T(d, n) reactions. Instrum Exp Tech 49, 765–777 (2006). https://doi.org/10.1134/S0020441206060030

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  • DOI: https://doi.org/10.1134/S0020441206060030

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