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Determination of antineutrino spectra from nuclear reactors

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dc.contributorVirginia Techen
dc.contributor.authorHuber, Patricken
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-11en
dc.date.accessioned2013-12-18T19:26:50Zen
dc.date.available2013-12-18T19:26:50Zen
dc.date.issued2011-08-29en
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
dc.description.sponsorshipUS Department of Energy DE-SC0003915en
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
dc.identifier.doihttps://doi.org/10.1103/PhysRevC.84.024617en
dc.identifier.issn0556-2813en
dc.identifier.urihttp://hdl.handle.net/10919/24725en
dc.identifier.urlhttp://prc.aps.org/pdf/PRC/v84/i2/e024617en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectneutron fission-productsen
dc.subjectallowed beta-decayen
dc.subjectenergy-levelsen
dc.subjectlight-nucleien
dc.subjectdata sheetsen
dc.subjectpu-239en
dc.subjectu-235en
dc.subjectn-12en
dc.subjectb12en
dc.subjectPhysicsen
dc.titleDetermination of antineutrino spectra from nuclear reactorsen
dc.title.serialPhysical Review Cen
dc.typeArticle - Refereeden

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