Abstract

It is shown on the basis of a one-group diffusion model with delayed neutrons that if the pulsed feedback function is negative and nonmonotonic and the gain of the feedback is large, an autooscillatory regime of spatiotemporal chaos, called the regime of pulsed turbulence of the neutron field, arises in small reactors. It consists in the fact that neutron bursts with random intensity arise at random times in local regions of the reactor, whose size, shape, and arrangement in the core vary irregularly with time. It is indicated that this regime is possible and could be desirable in reactors with a gaseous core.

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