Chernezhenko S. Ultraslow wave neutron-nuclear burning under epithermal neutrons and the modes with peaking in the uranium-plutonium environment.

A general criterion for existence of the wave modes of the neutron-nuclear burning both for the Akhiezer wave and for the Feoktistov wave is formulated, and possibly existence of the wave nuclear burning in the uranium-238 environment not only under fast but also under cold, epithermal and resonance neutrons is shown. At the Feoktistov criterion fulfillment for the uranium-238 environment, whose enrichment by uranium-235 corresponds to subcritical state, possibility of existence of the slow wave neutron-nuclear burning in a uranium-plutonium environments in energy area of cold, thermal, epithermal and resonance neutrons is shown. Resonant properties of dependence of neutron-spectrum-averaged cross-sections for main nuclear reactor reactions on the nuclear fuel temperature is found and theoretically substantiated. Dependences of thermal source density for a uranium-plutonium environment are obtained and existence of the Kurdumov modes with peaking is confirmed.