Multiplication Factor for Subcritical Multiplying System and the Efficiency of Source Neutrons

In this paper, the analysis of the relation between the multiplication factor of neutrons of the multiplying system measured in critical experiments and the system reactivity is performed on the basis of the neutron transport equation. A simple relation is obtained for the calculated and the experim...

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Bibliographic Details
Published in:Physics of atomic nuclei 2021-12, Vol.84 (8), p.1424-1430
Main Authors: Ershova, L. S., Lukin, A. V., Khmelnitsky, D. V.
Format: Article
Language:English
Subjects:
Analysis
Beryllium
Critical experiments
Mathematical analysis
Multiplication
Neutrons
Particle and Nuclear Physics
Physics
Physics and Astronomy
Plutonium
Polyethylenes
Transport equations
Uranium
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Summary:In this paper, the analysis of the relation between the multiplication factor of neutrons of the multiplying system measured in critical experiments and the system reactivity is performed on the basis of the neutron transport equation. A simple relation is obtained for the calculated and the experimental determination of the efficiency of source neutrons. Numerical calculations aimed at verifying the obtained relations are performed for spherically symmetric systems that contain highly enriched uranium, plutonium, iron, beryllium, and polyethylene.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778821080068