Assessment of Temperature Reactivity Effect in Compact Plutonium Systems
| Autor: | S. A. Andreev, A. A. Vayvod, A. V. Lukin, S. S. Besov, A. A. Yudov |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Work (thermodynamics) 010308 nuclear & particles physics Monte Carlo method Thermodynamics chemistry.chemical_element Heat sink 01 natural sciences Atomic and Molecular Physics and Optics Plutonium Breeder (animal) chemistry 0103 physical sciences Reactivity (chemistry) Exponential decay 010306 general physics |
| Zdroj: | Physics of Atomic Nuclei. 83:1157-1161 |
| ISSN: | 1562-692X 1063-7788 |
| Popis: | This work considers the effect of temperature change in plutonium breeder systems (BS) on the reactivity and critical parameters thereof in the course of integral critical experiments conducted at the All-Russian Scientific Research Institute of Technical Physics (VNIITF). The BS temperature reactivity factors (TRF) $$\frac{{\partial \rho }}{{\partial T}}$$ were assessed according to the multiplier factor Q depending on the BS temperature and according to the change in decay constant α. Experimental and estimated (using Monte Carlo method) TRF values were compared. Extreme gaps in the BS under different temperature values were measured (in an operating mode with a natural heat sink and with the use of an air-cooling system). |
| Databáze: | OpenAIRE |
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