Radiation Characteristics of Europium-Containing Control Rods in a SM-2 Reactor after Long-Term Operation

Data are presented on the activity of europium isotopes accumulated in the absorbing elements of the control units of propulsion reactors (7.4·10^sup 18^ Bq), BN-600 and BOR-60 fast-neutron reactors (2.6·10^sup 17^ Bq), and the SM-2 research reactor (4.8·10^sup 15^ Bq). A universal computational pro...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2002-08, Vol.93 (2), p.656-660
Main Authors: Klochkov, E P, Risovanyi, V D, Vaneev, Yu E, Dorofeev, A N
Format: Article
Language:English
Subjects:
Absorption
Atomic energy
Computation
Computer simulation
Control rods
Error analysis
Errors
Europium
Europium isotopes
Isotopes
Radiation
Reactors
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Summary:Data are presented on the activity of europium isotopes accumulated in the absorbing elements of the control units of propulsion reactors (7.4·10^sup 18^ Bq), BN-600 and BOR-60 fast-neutron reactors (2.6·10^sup 17^ Bq), and the SM-2 research reactor (4.8·10^sup 15^ Bq). A universal computational procedure was developed for investigating the radiation characteristics of absorbing elements. Features of this procedure are demonstrated for the example simulating the isotopic composition of SM-2 absorbing elements. It is shown that the computed and experimental values of the parameters of the height distribution of the activity of europium isotopes agree within the limits of computational and measurement errors, and the computed total activity over the volume of an absorption element is 15% higher than the experimental value.[PUBLICATION ABSTRACT]
ISSN:1063-4258
1573-8205
DOI:10.1023/A:1021096715382