Determination of the antineutrino spectrum from 235U thermal neutron fission products up to 9.5 MeV

Schreckenbach, K.; Colvin, G.; Gelletly, W.; Feilitzsch, F. von

doi:10.1016/0370-2693(85)91337-1

Cited by 417 publications

(402 citation statements)

References 15 publications

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“…The instantaneous thermal power of each reactor core is provided by EDF with time steps of < 1 minute with an uncertainty of 0.5 % at the full reactor power.ν e 's are produced in nuclear reactors by the β-decay of fission products, in which more than 99.7 % of fissions originate from four isotopes, 235 U, 239 Pu, 238 U, and 241 Pu. The referenceν e spectra are derived for 235 U, 239 Pu and 241 Pu from fits to their β spectrum measured at the ILL research reactor [14][15][16] considering the allowed transitions. It was highlighted that contribution of the forbidden - Table 1.…”

Section: Reactorν E Predictionmentioning

confidence: 99%

Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector

Abe¹,

Anjos²,

Barrière³

et al. 2014

J. High Energ. Phys.

Self Cite

263

244

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Section: Reactorν E Predictionmentioning

confidence: 99%

Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector

Abe¹,

Anjos²,

Barrière³

et al. 2014

J. High Energ. Phys.

Self Cite

263

244

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“…calculations [6][7][8]. The resulting predictions for the rates ofν e -induced events measured in several neutrino experiments are smaller than the experimental rates.…”

Section: Introductionmentioning

confidence: 87%

Reactor fuel fraction information on the antineutrino anomaly

Giunti

Laveder

et al. 2017

J. High Energ. Phys.

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Abstract:We analyzed the evolution data of the Daya Bay reactor neutrino experiment in terms of short-baseline active-sterile neutrino oscillations taking into account the theoretical uncertainties of the reactor antineutrino fluxes. We found that oscillations are disfavored at 2.6σ with respect to a suppression of the 235 U reactor antineutrino flux and at 2.5σ with respect to variations of the 235 U and 239 Pu fluxes. On the other hand, the analysis of the rates of the short-baseline reactor neutrino experiments favor active-sterile neutrino oscillations and disfavor the suppression of the 235 U flux at 3.1σ and variations of the 235 U and 239 Pu fluxes at 2.8σ. We also found that both the Daya Bay evolution data and the global rate data are well-fitted with composite hypotheses including variations of the 235 U or 239 Pu fluxes in addition to active-sterile neutrino oscillations. A combined analysis of the Daya Bay evolution data and the global rate data shows a slight preference for oscillations with respect to variations of the 235 U and 239 Pu fluxes. However, the best fits of the combined data are given by the composite models, with a preference for the model with an enhancement of the 239 Pu flux and relatively large oscillations.

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“…Only four fissile isotopes, 235 U, 238 U, 239 Pu and 241 Pu, contribute significantly to the ν e spectrum [13][14][15] . Spectral uncertainties were further constrained according to ref.…”

Section: Geoneutrino Detectionmentioning

confidence: 99%

Partial radiogenic heat model for Earth revealed by geoneutrino measurements

Gando¹,

Gando²,

Ichimura³

et al. 2011

Nature Geosci

201

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The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source. The current total heat flux from the Earth to space is 44.2 ± 1.0 TW, but the relative contributions from residual primordial heat and radiogenic decay remain uncertain. However, radiogenic decay can be estimated from the flux of geoneutrinos, electrically neutral particles that are emitted during radioactive decay and can pass through the Earth virtually unaffected. Here we combine precise measurements of the geoneutrino flux from the Kamioka Liquid-Scintillator Antineutrino Detector, Japan, with existing measurements from the Borexino detector, Italy. We find that decay of uranium-238 and thorium-232 together contribute 20.0 +8.8 −8.6 TW to Earth's heat flux. The neutrinos emitted from the decay of potassium-40 are below the limits of detection in our experiments, but are known to contribute 4 TW. Taken together, our observations indicate that heat from radioactive decay contributes about half of Earth's total heat flux. We therefore conclude that Earth's primordial heat supply has not yet been exhausted.

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Determination of the antineutrino spectrum from 235U thermal neutron fission products up to 9.5 MeV

Cited by 417 publications

References 15 publications

Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector

Improved measurements of the neutrino mixing angle θ 13 with the Double Chooz detector

Reactor fuel fraction information on the antineutrino anomaly

Partial radiogenic heat model for Earth revealed by geoneutrino measurements

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