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dc.contributorVirginia Tech
dc.contributor.authorHuber, P.
dc.date.accessioned2013-12-18T19:26:50Z
dc.date.available2013-12-18T19:26:50Z
dc.date.issued2011-08-29
dc.identifier.citationHuber, Patrick., Aug 29, 2011. “Determination of antineutrino spectra from nuclear reactors,” PHYSICAL REVIEW C 84(2): 024617. DOI: 10.1103/PhysRevC.84.024617en_US
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/10919/24725
dc.description.abstractIn this paper we study the effect of well-known higher-order corrections to the allowed beta-decay spectrum on the determination of antineutrino spectra resulting from the decays of fission fragments. In particular, we try to estimate the associated theory errors and find that induced currents like weak magnetism may ultimately limit our ability to improve the current accuracy and under certain circumstance could even greatly increase the theoretical errors. We also perform a critical evaluation of the errors associated with our method to extract the antineutrino spectrum using synthetic beta spectra. It turns out that a fit using only virtual beta branches with a judicious choice of the effective nuclear charge provides results with a minimal bias. We apply this method to actual data for (235)U, (239)Pu, and (241)Pu and confirm, within errors, recent results, which indicate a net 3% upward shift in energy-averaged antineutrino fluxes. However, we also find significant shape differences which can, in principle, be tested by high-statistics antineutrino data samples.en_US
dc.description.sponsorshipUS Department of Energy DE-SC0003915
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjectneutron fission-products
dc.subjectallowed beta-decay
dc.subjectenergy-levels
dc.subjectlight-nuclei
dc.subjectdata sheets
dc.subjectpu-239
dc.subjectu-235
dc.subjectn-12
dc.subjectb12
dc.subjectPhysics
dc.titleDetermination of antineutrino spectra from nuclear reactors
dc.typeArticle - Refereed
dc.identifier.urlhttp://prc.aps.org/pdf/PRC/v84/i2/e024617
dc.date.accessed2013-12-11
dc.title.serialPhysical Review C
dc.identifier.doihttps://doi.org/10.1103/PhysRevC.84.024617


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