Thermodynamic Analysis of the Gas Phase Composition over UraniumPlutonium Carbonitride Irradiated with Fast Neutrons G. S. Bulatov, K. N. Gedgovd, and D. Yu. Lyubimov Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia Luch Research Institute (Research and Production Association, Federal Governmental Unitary Company), Russia e-mail:
Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script
Received October 14, 2008 Abstract — A thermodynamic analysis of the gas phase composition over uranium–plutonium carbonitride U0.8Pu(C0.5N0.5)0.995 irradiated with fast neutrons was carried out with respect to temperature and burnout. In the temperature range of 900–2500 K, accumulation of fission products in fuel resulted in the formation of amulticomponent gas phase containing the following basic elements and compounds: volatile (Cs, Sr, Ba, Se, Te, I, Pd, CsI, Cs2I2, BaI, SrI, BaI2, SrI2, LaSe, TeSe, and LaTe), nitrogen-containing components (N2, N, CN,N2, C2N2, UN, UN2, PuN2, CsN, CeN, LaN, YN, MoN, and ZrN), carbon-containing components (C, UC, UC2, C4, PuC, PuC2, PuC4, ZrC, ZrC2, YC2, CeC2, LaC2, and NdC2), and hardly volatile metals (U, Pu, Ru, Rh, Pd, Y, Ce, La, Nd, Tc, Mo, and Zr). The partial pressures of the said gas phase components over carbonitride fuel were calculated with respect to temperature and burnout (up to 18%). PACS: 05.70.Np DOI: 10.1134/S2070205109040054
|