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Reactivity Measurements in a Thorium Critical Assembly

Keiji Kobayashi, Junnosuke HORIE, Keiji Kanda, Toshikazu Shibata

Open publisher page 19 citations

Abstract

Measurement of the reactivity effect due to substitution of metallic thorium for the core elements in a critical assembly has been made as part of the preliminary experiment for an intermediate reactor by using the multiregion critical core. The results of criticality calculations have been in good agreement with experiments in the case of the core without thorium, although the calculated neutron multiplication factor has been ∼2% larger than the experimental value for the core with thorium.

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What this paper is about

Measurement of the reactivity effect due to substitution of metallic thorium for the core elements in a critical assembly has been made as part of the preliminary experiment for an intermediate reactor by using the multiregion critical core. The results of criticality calculations have been in good agreement with experiments in the case of the core without thorium, although the calculated neutron multiplication factor has been ∼2% larger than the experimental value for the core with thorium.

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OpenAlex reports 19 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Measurement of the reactivity effect due to substitution of metallic thorium for the core elements in a critical assembly has been made as part of the preliminary experiment for an intermediate reactor by using the multiregion critical core. The results of criticality calculations have been in good agreement with experiments in the case of the core without thorium, although the calculated neutron multiplication factor has been ∼2% larger than the experimental value for the core with thorium.

Key concepts: Thorium, Criticality, Reactivity (psychology), Nuclear reactor core, Nuclear physics, Materials science, Nuclear engineering, Isotopes of thorium

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