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THEORIE «UN GROUPE-DIFFUSION» [1 record]
Record 1 - internal organization data 2009-10-26
Record 1, English
Record 1, Subject field(s)
- Nuclear Physics
Record 1, Main entry term, English
- one-group diffusion theory
1, record 1, English, one%2Dgroup%20diffusion%20theory
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Critical conditions for the infinite and finite reflected, externally-moderated, gaseous-core, spherical reactor are derived analytically from two-region one-group diffusion theory. The source of thermal neutrons is determined from Fermi age theory. The critical conditions so obtained are quite complicated and difficult to evaluate by hand calculations. They are programmed for the IBM 1620 computer and critical masses for a pure U235-D2O reactor are computed for a reasonable range of core radii and moderator-reflector thicknesses. It is shown that for a gaseous-core reactor, two-group diffusion theory gives the identical results as one-group diffusion theory, and that the one-group results are in close agreement with multi-group results presented in the literature. 1, record 1, English, - one%2Dgroup%20diffusion%20theory
Record 1, Key term(s)
- one group diffusion theory
Record 1, French
Record 1, Domaine(s)
- Physique nucléaire
Record 1, Main entry term, French
- théorie «un groupe-diffusion»
1, record 1, French, th%C3%A9orie%20%C2%ABun%20groupe%2Ddiffusion%C2%BB
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Équation de la théorie «un groupe-diffusion». La théorie à un groupe consiste à considérer ensemble tous les neutrons quelle que soit leur énergie, autrement dit à les traiter comme s'ils étaient monocinétiques. Nous développerons ici cette théorie en introduisant en outre l'approximation de la diffusion [...] 1, record 1, French, - th%C3%A9orie%20%C2%ABun%20groupe%2Ddiffusion%C2%BB
Record 1, Key term(s)
- théorie un groupe-diffusion
- théorie un groupe diffusion
Record 1, Spanish
Record 1, Textual support, Spanish
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