Absolutization of the Subcriticality Levels Measured by the Neutron Source Multiplication Method and the Area Ratio Method

Versions of the neutron source multiplication (NSM) method are considered. The method developed at foreign research institutes to determine the reactivity of deeply subcritical reactors uses reactivity of the “reference” level. Further, the results of the use in the above methods and in the area rat...

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Bibliographic Details
Published in:Physics of atomic nuclei 2020-12, Vol.83 (8), p.1162-1179
Main Author: Kolesov, V. F.
Format: Article
Language:English
Subjects:
Analysis
Analytical instruments
Critical mass
Methods
Multiplication
Neutrons
Particle and Nuclear Physics
Physics
Physics and Astronomy
Research facilities
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Summary:Versions of the neutron source multiplication (NSM) method are considered. The method developed at foreign research institutes to determine the reactivity of deeply subcritical reactors uses reactivity of the “reference” level. Further, the results of the use in the above methods and in the area ratio method of the computational experiment simulation technique that yields sufficiently precise data without involving the reference level are discussed. The practicability of applying the method of the computational experiment simulation to the versions of the neutron source multiplication methods used at some institutes of Russia in the procedure of critical mass experiments is validated.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778820080050