The effect of photoneutrons on the kinetics of the PIK reactor is analyzed and the effective photoneutron fraction and value are calculated. The contribution of various nuclear precursors of high-energy delayed γ rays – fission products – to photoneutron production is determined. The nucleus 140La makes the main contribution to photoneutron production at long times after the PIK reactor stops operating. The intensity of the effective neutron source (based on photoneutrons) as a function of the time after the reactor stops is determined.
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Translated from Atomnaya Énergiya, Vol. 107, No. 3, pp. 154–159, September, 2009.
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Onegin, M.S. Delayed photoneutrons in the PIK reactor. At Energy 107, 194–201 (2009). https://doi.org/10.1007/s10512-010-9215-1
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DOI: https://doi.org/10.1007/s10512-010-9215-1