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A new paradigm for breeding of nuclear fuel
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Engineering.ORCID iD: 0000-0002-6082-8913
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Engineering.
2019 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 133, p. 816-819Article in journal (Refereed) Published
Abstract [en]

Breeding of nuclear fuel from fertile nuclides may allow to extend known nuclear fuel resources from a century to thousands of years. In this article, we show that the requirement for a breeder reactor fuel to feature an effective neutron production per absorption larger than 2 (eta > 2) breaks down for fertile and fissionable nuclides meeting two criteria related to the relative magnitude of capture and fission cross sections. Moreover, we find that a breeding ratio larger than unity can be achieved for fuels consisting of a single nuclide, in spite of the this nuclide featuring eta < 2. In particular, neptunium is identified as a nuclear fuel that can sustain a reactivity increase over time up to a burn-up exceeding 240 GWd/ton in a fast neutron spectrum.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2019. Vol. 133, p. 816-819
Keywords [en]
Breeding, Conversion ratio, Reactivity based criterion, New paradigm, Neptunium
National Category
Subatomic Physics Energy Systems
Research subject
Physics, Nuclear Engineering
Identifiers
URN: urn:nbn:se:kth:diva-260989DOI: 10.1016/j.anucene.2019.07.028ISI: 000484649800078Scopus ID: 2-s2.0-85069550862OAI: oai:DiVA.org:kth-260989DiVA, id: diva2:1359209
Note

QC 20191008

Available from: 2019-10-08 Created: 2019-10-08 Last updated: 2019-11-26Bibliographically approved

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Wallenius, JanneBortot, Sara

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