Feynman-alpha and Rossi-alpha formulas with spatial and modal effects
2011 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 38, no 2-3, 590-600 p.Article in journal (Refereed) Published
Feynman-alpha and Rossi-alpha formulas including multiple alpha-modes are derived for stochastic and continuous neutron sources. The presented formalism is further developed to achieve spatial correction factors for the single alpha-mode point kinetics representations of the Feynman-alpha and Rossi-alpha formulas. As a natural extension of the multiple alpha-mode formalism, delayed neutrons are included in the Feynman-alpha formula. The obtained formulas are validated experimentally in a strongly heterogeneous system obeying multiple alpha-modes, resulting in good agreement with the presented theoretical framework.
Place, publisher, year, edition, pages
2011. Vol. 38, no 2-3, 590-600 p.
Feynman-alpha, Rossi-alpha, Stochastic transport theory, Reactivity determination
IdentifiersURN: urn:nbn:se:kth:diva-13586DOI: 10.1016/j.anucene.2010.09.027ISI: 000287571100047ScopusID: 2-s2.0-78751608739OAI: oai:DiVA.org:kth-13586DiVA: diva2:326036
QC 20100621 Uppdaterad från submitted till published (20110315).2010-06-212010-06-212011-03-15Bibliographically approved