Two-Group Theory of the Feynman-Alpha Method for Reactivity Measurement in ADS | Zendy

Lénard Pál | Zendy; I. Pázsit | Zendy

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Two-Group Theory of the Feynman-Alpha Method for Reactivity Measurement in ADS

Author(s) -

Lénard Pál,

I. Pázsit

Publication year - 2012

Publication title -

science and technology of nuclear installations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.417

H-Index - 24

eISSN - 1687-6083

pISSN - 1687-6075

DOI - 10.1155/2012/620808

Subject(s) - feynman diagram , reactivity (psychology) , alpha (finance) , neutron , energy (signal processing) , inclusion (mineral) , physics , mathematics , alpha particle , nuclear physics , mathematical physics , quantum mechanics , statistics , thermodynamics , medicine , construct validity , alternative medicine , pathology , psychometrics

The theory of the Feynman-alpha method, which is used to determine the subcritical reactivity of systems driven by an external source such as an ADS, is extended to two energy groups with the inclusion of delayed neutrons. This paper presents a full derivation of the variance to mean formula with the inclusion of two energy groups and delayed neutrons. The results are illustrated quantitatively and discussed in physical terms

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