Abstract
Such specific properties of lead isotope 208Pb as large atomic weight, weak neutron absorption and high-energy threshold of inelastic neutron scattering result can lead to some peculiarities in neutron kinetics of the fast reactor core reflected by a thick 208Pb-layer. These peculiarities are able to upgrade substantially the reactor safety by means of the following factors: additional delayed neutrons, “dead-time” of additional delayed neutrons, resistibility of the chain fission reaction against the reactivity jumps and some others considered in the paper.
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