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Title: Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra

Abstract

The accurate determination of reactor antineutrino spectra remains a very active research topic for which new methods of study have emerged in recent years. Indeed, following the long-recognized reactor anomaly (measured antineutrino deficit in short baseline reactor experiments when compared with spectral predictions), the three international reactor neutrino experiments Double Chooz, Daya Bay and Reno have recently demonstrated the existence of spectral distortions in their measurements with respect to the same predictions. These spectral predictions were obtained through the conversion of integral beta-energy spectra obtained at the ILL research reactor. Several studies have shown that the underlying nuclear physics required for the conversion of these spectra into antineutrino spectra is not totally understood. An alternative to such converted spectra is a complementary approach that consists of determining the antineutrino spectrum by means of the measurement and processing of nuclear data. The beta properties of some key fission products suffer from the pandemonium effect which can be circumvented by the use of the Total Absorption Gammaray Spectroscopy technique (TAGS). The two main contributors to the Pressurized Water Reactor antineutrino spectrum in the region where the spectral distortion has been observed are Rb-92 and Cs-142, which have been measured at the radioactivemore » beam facility of the University of Jyvaskyla in two TAGS experiments. We present the results of the analysis of the TAGS measurements of the beta-decay properties of Rb-92 along with preliminary results on Cs-142 and report on the measurements already performed.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Academy of Finland; Spanish Ministerio de Economia y Competitividad (MINECO); USDOE Office of Science - Office of Nuclear Physics
OSTI Identifier:
1491101
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 2016 International Conference on Nuclear Data for Science and Technology (ND2016), 09/11/16 - 09/16/16, Brugge, Belgium
Country of Publication:
United States
Language:
English

Citation Formats

Fallot, M, Porta, A, Le Meur, L., Briz, J. A., Zakari-Issoufou, A A, and Kondev, F. G. Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra. United States: N. p., 2017. Web. doi:10.1051/epjconf/201714610002.
Fallot, M, Porta, A, Le Meur, L., Briz, J. A., Zakari-Issoufou, A A, & Kondev, F. G. Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra. United States. doi:10.1051/epjconf/201714610002.
Fallot, M, Porta, A, Le Meur, L., Briz, J. A., Zakari-Issoufou, A A, and Kondev, F. G. Sun . "Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra". United States. doi:10.1051/epjconf/201714610002. https://www.osti.gov/servlets/purl/1491101.
@article{osti_1491101,
title = {Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra},
author = {Fallot, M and Porta, A and Le Meur, L. and Briz, J. A. and Zakari-Issoufou, A A and Kondev, F. G.},
abstractNote = {The accurate determination of reactor antineutrino spectra remains a very active research topic for which new methods of study have emerged in recent years. Indeed, following the long-recognized reactor anomaly (measured antineutrino deficit in short baseline reactor experiments when compared with spectral predictions), the three international reactor neutrino experiments Double Chooz, Daya Bay and Reno have recently demonstrated the existence of spectral distortions in their measurements with respect to the same predictions. These spectral predictions were obtained through the conversion of integral beta-energy spectra obtained at the ILL research reactor. Several studies have shown that the underlying nuclear physics required for the conversion of these spectra into antineutrino spectra is not totally understood. An alternative to such converted spectra is a complementary approach that consists of determining the antineutrino spectrum by means of the measurement and processing of nuclear data. The beta properties of some key fission products suffer from the pandemonium effect which can be circumvented by the use of the Total Absorption Gammaray Spectroscopy technique (TAGS). The two main contributors to the Pressurized Water Reactor antineutrino spectrum in the region where the spectral distortion has been observed are Rb-92 and Cs-142, which have been measured at the radioactive beam facility of the University of Jyvaskyla in two TAGS experiments. We present the results of the analysis of the TAGS measurements of the beta-decay properties of Rb-92 along with preliminary results on Cs-142 and report on the measurements already performed.},
doi = {10.1051/epjconf/201714610002},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {1}
}

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Works referenced in this record:

New Antineutrino Energy Spectra Predictions from the Summation of Beta Decay Branches of the Fission Products
journal, November 2012


Determination of antineutrino spectra from nuclear reactors
journal, August 2011


Contribution of Recently Measured Nuclear Data to Reactor Antineutrino Energy Spectra Predictions
journal, June 2014


Total Absorption Spectroscopy Study of Rb 92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape
journal, September 2015


Reactor Decay Heat in Pu 239 : Solving the γ Discrepancy in the 4–3000-s Cooling Period
journal, November 2010


Nuclear structure insights into reactor antineutrino spectra
journal, January 2015


Enhanced γ -Ray Emission from Neutron Unbound States Populated in β Decay
journal, August 2015


First experiment with the NUSTAR/FAIR Decay Total Absorption γ -Ray Spectrometer (DTAS) at the IGISOL IV facility
journal, June 2016

  • Guadilla, V.; Algora, A.; Tain, J. L.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 376
  • DOI: 10.1016/j.nimb.2015.12.018

Improved predictions of reactor antineutrino spectra
journal, May 2011


Reactor antineutrino anomaly
journal, April 2011


The essential decay of pandemonium: A demonstration of errors in complex beta-decay schemes
journal, November 1977


JYFLTRAP: a Penning trap for precision mass spectroscopy and isobaric purification
journal, April 2012


Effects of Fission Yield Data in the Calculation of Antineutrino Spectra for U 235 ( n , fission ) at Thermal and Fast Neutron Energies
journal, April 2016


Systematic Uncertainties in the Analysis of the Reactor Neutrino Anomaly
journal, May 2014


Spectral Structure of Electron Antineutrinos from Nuclear Reactors
journal, January 2015


Algorithms for the analysis of -decay total absorption spectra
journal, February 2007

  • Tain, J. L.; Cano-Ott, D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 571, Issue 3
  • DOI: 10.1016/j.nima.2006.10.098

Beta and gama spectra of short-lived fission products
journal, July 1990


Antineutrino spectra from 241Pu and 239Pu thermal neutron fission products
journal, February 1989


Total absorption γ -ray spectroscopy of the β -delayed neutron emitters Br 87 , Br 88 , and Rb 94
journal, February 2017


Total absorption study of the β decay of 102 , 104 , 105 Tc
journal, April 2013