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Joint Determination of Reactor Antineutrino Spectra from U-235 and Pu-239 Fission by Daya Bay and PROSPECT
Journal article   Open access   Peer reviewed

Joint Determination of Reactor Antineutrino Spectra from U-235 and Pu-239 Fission by Daya Bay and PROSPECT

F. P. An, M. Andriamirado, A. B. Balantekin, H. R. Band, C. D. Bass, D. E. Bergeron, D. Berish, M. Bishai, S. Blyth, N. S. Bowden, …
Physical review letters, v 128(8)
22 Feb 2022
PMID: 35275656
url
http://arxiv.org/abs/2106.12251View
Accepted (AM)CC BY V4.0 Open

Abstract

Physical Sciences Physics Physics, Multidisciplinary Science & Technology
A joint determination of the reactor antineutrino spectra resulting from the fission of U-235 and Pu-239 has been carried out by the Daya Bay and PROSPECT Collaborations. This Letter reports the level of consistency of U-235 spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant U-235 and Pu-239 isotopes and improves the uncertainty of the U-235 spectral shape to about 3%. The U-235 and Pu-239 antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the U-235 and Pu-239 spectra based on the combination of experiments at low-and highly enriched uranium reactors.

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Collaboration types
Industry collaboration
Domestic collaboration
International collaboration
Web of Science research areas
Physics, Multidisciplinary
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