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Effect of the β decay of metallic fission products on the chemical and phase compositions of the uranium–plutonium nitride nuclear fuel irradiated by fast neutrons

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Russian Metallurgy (Metally) Aims and scope

Abstract

Thermodynamic analysis of the chemical and phase compositions of uranium–plutonium nitride (U0.8Pu0.2)N0.995 irradiated by fast neutrons to a burn-up fraction of 14% shows that a structure, which consists of a solid solution based on uranium and plutonium nitrides and containing some elements (americium, neptunium, zirconium, yttrium, lanthanides), individual condensed phases (U2N3, CeRu2, Ba3N2, CsI, Sr3N2, LaSe), metallic molybdenum and technetium, and U(Ru, Rh, Pd)3 intermetallics, forms due to the accumulation of metallic fission products. The contents and compositions of these phases are calculated. The change in the chemical and phase compositions of the irradiated uranium–plutonium nitride during the β decay of metallic radioactive fission products is studied. The kinetics of the transformations of 95Nb41N, 143Pr59N, 151Sm62N, and 147NdN into 95Mo42 + Ns.s., 143Nd60N, 151Eu63N, and 147SmN, respectively, is calculated.

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Authors and Affiliations

  1. National Research University Higher School of Economics, Moscow, Russia

    G. G. Bondarenko & M. M. Yakunkin

  2. FGUP NII NPO Luch, Podolsk, Moscow oblast, Russia

    A. V. Androsov & D. Yu. Lyubimov

  3. Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia

    G. S. Bulatov & K. N. Gedgovd

Authors
  1. G. G. Bondarenko
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  2. A. V. Androsov
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  3. G. S. Bulatov
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  4. K. N. Gedgovd
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  5. D. Yu. Lyubimov
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  6. M. M. Yakunkin
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Corresponding author

Correspondence to G. G. Bondarenko.

Additional information

Original Russian Text © G.G. Bondarenko, A.V. Androsov, G.S. Bulatov, K.N. Gedgovd, D.Yu. Lyubimov, M.M. Yakunkin, 2016, published in Metally, 2016, No. 5, pp. 117–122.

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Bondarenko, G.G., Androsov, A.V., Bulatov, G.S. et al. Effect of the β decay of metallic fission products on the chemical and phase compositions of the uranium–plutonium nitride nuclear fuel irradiated by fast neutrons. Russ. Metall. 2016, 879–883 (2016). https://doi.org/10.1134/S0036029516090068

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  • DOI: https://doi.org/10.1134/S0036029516090068

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