FAST-NEUTRON NUCLEAR REACTOR Russian patent published in 2015 - IPC G21C1/02 

FIELD: power industry.

SUBSTANCE: nuclear reactor core is enveloped with a lead neutron reflector. In the reflector part adjacent to the core there is lead in which more than 90% of ²⁰⁸Pb isotope, and in the peripheral part - a neutron retarding material with low atomic weight in an amorphous state at cryogenic temperature. According to one particular case, the reactor housing is made from polycrystalline material slowly absorbing neutrons, for example Mo-Zr alloy and built into composition of the neutron reflector. According to another particular case, between the housing and the peripheral part of the reflector with the neutron retarding material with low atomic weight there arranged is polycrystalline material with high atomic weight, for example lead with content of ²⁰⁸Pb isotope of more than 90%.

EFFECT: excluding runaway of a reactor at jumps of reactivity, which considerably exceed a fraction of delayed neutrons as to the value.

3 cl, 2 dwg