Large Impact of the Decay of Niobium Isomers on the Reactor ¯νe Summation Calculations
Guadilla, V., Algora, A., Tain, J. L., Estienne, M., Fallot, M., Sonzogni, A.A., Agramunt, J., Äystö, J., Briz, J. A., Cucoanes, A., Eronen, T., Fraile, L. M., Ganioğlu, E., Gelletly, W., Gorelov, D., Hakala, J., Jokinen, A., Jordan, D., Kankainen, A., . . . Zakari-Issoufou, A.-A. (2019). Large Impact of the Decay of Niobium Isomers on the Reactor ¯νe Summation Calculations. Physical Review Letters, 122(4), Article 042502. https://doi.org/10.1103/PhysRevLett.122.042502
Published inPhysical Review Letters
© 2019 American Physical Society
Even mass neutron-rich niobium isotopes are among the principal contributors to the reactor antineutrino energy spectrum. They are also among the most challenging to measure due to the refractory nature of niobium, and because they exhibit isomeric states lying very close in energy. The β-intensity distributions of 100gs;100mNb and 102gs;102mNb β decays have been determined using the total absorption γ-ray spectroscopy technique. The measurements were performed at the upgraded Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. Here, the double Penning trap system JYFLTRAP was employed to disentangle the β decay of the isomeric states. The new data obtained in this challenging measurement have a large impact in antineutrino summation calculations. For the first time the discrepancy between the summation model and the reactor antineutrino measurements in the region of the shape distortion has been reduced.
PublisherAmerican Physical Society
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Hayen, L.; Kostensalo, Joel; Severijns, N.; Suhonen, Jouni (American Physical Society, 2019)We study the dominant forbidden transitions in the antineutrino spectra of the fission actinides from 4 MeV onward using the nuclear shell model. Through explicit calculation of the shape factor, we show the expected changes ...
Kostensalo, Joel; Suhonen, Jouni; Zuber, K. (American Physical Society, 2020)Radiochemical experiments for low-energy solar-neutrino detection have been making headlines by exploiting the isotopes 37Cl and 71Ga. Such a very low-threshold measurement of this type can also be performed using 205Tl, ...
Neutral-current supernova-neutrino cross sections for 204,206,208Pb calculated by Skyrme quasiparticle random-phase approximation Almosly, Wafa; Carlsson, B. G.; Suhonen, Jouni; Ydrefors, E. (American Physical Society, 2019)The present work constitutes a detailed study of neutral-current (NC) supernova-neutrino scattering off the stable even-even lead isotopes 204,206,208Pb. This is a continuation of our previous work [Almosly et al., Phys. ...
Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra and Decay Heat Calculations Porta, A.; Zakari-Issoufou, A.-A.; Fallot, M.; Algora, A.; Tain, J.L.; Valencia, E.; Rice, S.; Bui, V.M.; Cormon, S.; Estienne, M.; Agramunt, J.; Äystö, J.; Bowry, M.; Briz, J.A.; Caballero-Folch, R.; Cano-Ott, D.; Cucouanes, A.; Elomaa, Viki-Veikko; Eronen, Tommi; Estévez, E.; Farrelly, G.F.; Garcia, A.R.; Gelletly, W.; Gomez-Hornillos, M.B; Gorlychev, V.; Hakala, Jani; Jokinen, Ari; Jordan, M.D.; Kankainen, Anu; Karvonen, Pasi; Kolhinen, Veli; Kondev, F.G.; Martinez, T.; Mendoza, E.; Molina, F.; Moore, Iain; Perez-Cerdán, A. B.; Podolyák, Zs.; Penttilä, Heikki; Regan, P.H.; Reponen, Mikael; Rissanen, Juho; Rubio, B.; Shiba, T.; Sonzogni, A.A.; Weber, Christine; IGISOL-Collaboration (EDP Sciences, 2016)Beta decay of fission products is at the origin of decay heat and antineutrino emission in nuclear reactors. Decay heat represents about 7% of the reactor power during operation and strongly impacts reactor safety. Reactor ...
Theoretical Calculations for Electron Spectra and Neutrino-Nucleus Scattering in Context of Reactor Antineutrino and Gallium Anomalies Kostensalo, Joel (2021)This thesis consists of fourteen publications and an introductory part on rare beta decays and neutrino-nucleus scattering. The overarching theme of this work is to provide state-of-the-art theoretical calculations for ...