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- Title
Monitoring of U content of fuel assemblies for nuclear reactors based on neutron and γ-ray scintillation detector systems.
- Authors
Romodanov, V.; Belevitin, A.; Afanasiev, V.; Dubenkov, N.; Pryakhin, A.
- Abstract
A model of the setup for determining the U content of a fuel assembly for WWER-440 reactors is described. The setup operates based on the digital technology for discriminating neutron and photon scintillation responses. An AmLi source is used as an external neutron source. A three-channel system for detecting fission particle coincidences is based on EJ-309 scintillators. A set of digital codes for obtaining and analyzing neutron-neutron ( nn), neutron-γ ( nγ), and γ-γ (γγ) coincidences has been developed. Dependences of double coincidences have been experimentally obtained and analyzed with the aim of determining the U content of the fuel assembly. It is shown that fission neutrons and coincidences of the nn and nn + γ n + nγ types are the best informative parameters for the U content of the fuel assembly.
- Subjects
NEUTRON-proton interactions; SCINTILLATION counters; NUCLEAR reactors; NUCLEAR fuels; NUCLEAR fission
- Publication
Instruments & Experimental Techniques, 2016, Vol 59, Issue 1, p120
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441216010103