Determination of antineutrino spectra from nuclear reactors
By Patrick Huber. 2011
442 citations recorded by the source corpus.
In this paper we study the effect of well-known higher-order corrections to the allowed $\ensuremath{\beta}$-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 $\ensuremath{\beta}$ spectra. It turns out that a fit using only virtual $\ensuremath{\beta}$ 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.
Subfields: Nuclear and High Energy Physics, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/c607cea2ca0c85c315fb54874166ba8994f4c691
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In Nuclear and High Energy Physics
In Spectroscopy
Citations in the corpus
- JUNO physics and detector (2021, methodology): “Since Daya Bay [21], Double Chooz [22], and RENO [23], among others, have found that the model prediction on the reactor antineutrino spectrum [24, 25] has large discrepancies with data, TAO will provide a reference spectrum for JUNO, and also provide a benchmark measurement to test nuclear database”