METHOD FOR CONTROLLED NUCLEAR FISSION AND NUCLEAR REACTOR Russian patent published in 2021 - IPC G21C1/00 G21C5/00 

FIELD: nuclear science.

SUBSTANCE: invention relates to a method for controlled nuclear fission and a reactor for its implementation. Fast neutrons are slowed down and a field of thermal neutrons is formed, and thermal neutrons are selected and returned to the fission zone. The fission zone of the reactor is performed without a moderator, the fissile material is introduced with a concentration of ²³⁵U comparable to or less than the concentration in natural uranium, the flux of thermal neutrons is deeply introduced through the channels in the fissile material before the interaction, increasing the return path of fast neutrons in it, the flux is moved relative to the fissile material of the fission zone reactor. The reactor contains a decelerating focusing structure, a fission zone, an energy pickup device, and the fission zone of the reactor does not contain moderators, the decelerating focusing structure has spacer grids, neutron interception sections, one or more neutron return sections, whose selection plates are oriented into the channels between the plates with a spacer grid with fissile matter of the fission zone.

EFFECT: simplification, growth of the specific power in the reactor and ensuring energy efficiency, safety and environmental acceptability, expanding the technical capabilities of nuclear reactors and the range of areas of their technical application.

5 cl, 4 dwg, 2 tbl