Effect of the electron decay of metallic fission products on the chemical and phase compositions of an irradiated uranium-plutonium fuel

A complex structure is shown to form in the uranium-plutonium nitride U 0.8 Pu 0.2 N irradiated by fast neutrons. It consists of a uranium-based solid solution; plutonium, zirconium, yttrium, and lanthanide nitrides; and individual condensed phases such as U 2 N 3 , BaTe, CeRu 2 , LaSe, Rh 3 Te 2 ,...

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Bibliographic Details
Published in:Russian metallurgy Metally 2009-10, Vol.2009 (5), p.426-430
Main Authors: Bondarenko, G. G., Bulatov, G. S., Gedgovd, K. N., Lyubimov, D. Yu, Yakushkin, M. M.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Decay
Intermetallic compounds
Irradiation
Materials Science
Mathematical analysis
Metallic Materials
Metallurgy
Molybdenum
Nitrides
Plutonium
Solid solutions
Uranium
Yttrium
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Summary:A complex structure is shown to form in the uranium-plutonium nitride U 0.8 Pu 0.2 N irradiated by fast neutrons. It consists of a uranium-based solid solution; plutonium, zirconium, yttrium, and lanthanide nitrides; and individual condensed phases such as U 2 N 3 , BaTe, CeRu 2 , LaSe, Rh 3 Te 2 , USe, Ba 3 N 2 , CsI, Sr 3 N 2 , metallic molybdenum, and U(Ru, Rh, Pd) 3 intermetallic compounds. The amount and composition of these phases are calculated at temperatures of 900 and 1900 K in the process of depletion to 18% heavy atoms (U + Pu). The variation of the composition of the irradiated uranium-plutonium nitride is studied upon the electron decay of metallic radionuclides. The kinetics of the transformations of 89 Sr 3 N 2 and 90 Sr 3 N 2 to 89 YN + 89 Y and 90 ZrN + 90 Zr, respectively, is calculated.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029509050115