New antineutrino energy spectra predictions from the summation of beta decay branches of the fission products

Abstract

In this paper, we study the impact of the inclusion of the recently measured beta decay properties of the ${}^{102;104;105;106;107}$Tc, ${}^{105}$Mo, and ${}^{101}$Nb nuclei in an updated calculation of the antineutrino energy spectra of the four fissible isotopes ${}^{235,238}$U, and ${}^{239,241}$Pu. These actinides are the main contributors to the fission processes in Pressurized Water Reactors. The beta feeding probabilities of the above-mentioned Tc, Mo and Nb isotopes have been found to play a major role in the $\gamma$ component of the decay heat of ${}^{239}$Pu, solving a large part of the $\gamma$ discrepancy in the 4 to 3000\,s range. They have been measured using the Total Absorption Technique (TAS), avoiding the Pandemonium effect. The calculations are performed using the information available nowadays in the nuclear databases, summing all the contributions of the beta decay branches of the fission products. Our results provide a new prediction of the antineutrino energy spectra of ${}^{235}$U, ${}^{239,241}$Pu and in particular of ${}^{238}$U for which no measurement has been published yet. We conclude that new TAS measurements are mandatory to improve the reliability of the predicted spectra.

10 pages, 2 figures

References in corpus (6)

• Observation of electron-antineutrino disappearance at Daya Bay
• Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• The Reactor Antineutrino Anomaly
• Indication for the disappearance of reactor electron antineutrinos in the Double Chooz experiment
• Reactor Simulation for Antineutrino Experiments using DRAGON and MURE

Cited by in corpus (52)

• Systematic Uncertainties in the Analysis of the Reactor Neutrino Anomaly
• Sterile Neutrinos
• Improved measurements of the neutrino mixing angle ${\theta }_{13}$ with the Double Chooz detector
• Light sterile neutrinos
• Reactor Neutrino Spectra
• Spectral Structure of Electron Antineutrinos from Nuclear Reactors
• Updated Summation Model: An Improved Agreement with the Daya Bay Antineutrino Fluxes
• Improved Short-Baseline Neutrino Oscillation Search and Energy Spectrum Measurement with the PROSPECT Experiment at HFIR
• Experimental Determination of the Antineutrino Spectrum of the Fission Products of ${}^{238}$U
• The Possible Origin and Implications of the Shoulder in Reactor Neutrino Spectra
• First-forbidden transitions in the reactor anomaly
• First-forbidden transitions in the reactor anomaly
• Total Absorption Spectroscopy Study of ${}^{92}$Rb Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape
• Neutrino mass hierarchy and electron neutrino oscillation parameters with one hundred thousand reactor events
• Extraction of the ${}^{235}$U and ${}^{239}$Pu Antineutrino Spectra at Daya Bay
• Total Absorption Gamma-Ray Spectroscopy of 87Br, 88Br and 94Rb Beta-Delayed Neutron Emitters
• Beta-decay studies for applied and basic nuclear physics
• Independent Measurement of Theta13 via Neutron Capture on Hydrogen at Daya Bay
• Measurement of the Antineutrino Spectrum from ${}^{235}$U Fission at HFIR with PROSPECT
• Enhanced Gamma-Ray Emission from Neutron Unbound States Populated in Beta Decay
• Reactor antineutrino fluxes - status and challenges
• Total Absorption Spectroscopy Study of the Beta Decay of ${}^{86}$Br and ${}^{91}$Rb
• SoLid: A short baseline reactor neutrino experiment
• Antineutrino Energy Spectrum Unfolding Based on the Daya Bay Measurement and Its Applications
• Performance of a full scale prototype detector at the BR2 reactor for the SoLid experiment
• Revealing Fine Structure in the Antineutrino Spectra From a Nuclear Reactor
• Reactor Neutrino Experiments: Present and Future
• Experimental Parameters for a Reactor Antineutrino Experiment at Very Short Baselines
• Prospects for Improved Understanding of Isotopic Reactor Antineutrino Fluxes
• First measurement of high-energy reactor antineutrinos at Daya Bay
• Impact of Fission Neutron Energies on Reactor Antineutrino Spectra
• Total absorption $\gamma$-ray spectroscopy of niobium isomers
• Particle physics origin of the 5 MeV bump in the reactor antineutrino spectrum?
• Nuclear Zemach Moments and Finite-Size Corrections to Allowed Beta Decay
• Reactor antineutrino flux and anomaly
• Mapping reactor neutrino spectra from TAO to JUNO
• New Realization of the Conversion Calculation for Reactor Antineutrino Fluxes
• Reactors as a source of antineutrinos: the effect of fuel loading and burnup for mixed oxide fuels
• Total absorption $\gamma$-ray spectroscopy of the $\beta$-delayed neutron emitters ${}^{137}$I and ${}^{95}$Rb
• The antineutrino energy structure in reactor experiments
• Nonfuel Antineutrino Contributions in the High Flux Isotope Reactor
• Experimental Aspects of Geoneutrino Detection: Status and Perspectives
• Self-consistent calculation of the reactor antineutrino spectra including forbidden transitions
• Ab initio calculations of reactor antineutrino fluxes with exact lepton wave functions
• Prospects of detecting the reactor $\overline{{\nu }_e}$-Ar coherent elastic scattering with a low threshold dual-phase argon time projection chamber at Taishan
• Inverse-square law violation and reactor antineutrino anomaly
• Model-Independent Determination of Isotopic Cross Sections per Fission for Reactor Antineutrinos
• Analysis of reactor burnup simulation uncertainties for antineutrino spectrum prediction
• Antineutrino flux from the Laguna Verde Nuclear Power Plant
• Exploring Current Constraints on Antineutrino Production by ${}^{241}$Pu and Paths Towards the Precision Reactor Flux Era
• Study of $\mathbf{\beta }$ Decay Shape Factors in First-Forbidden Transitions with $\mathbf{\Delta }{\mathbf{I}}^{\mathbf{\pi }}=0^{-}$ for Reactor Antineutrino Spectra Predictions
• Probing the quantum phase transition around $N\approx 60$ via mass measurements of technetium isotopes