EPJ Web of Conferences
Volume 111, 2016WONDER-2015 – 4th International Workshop On Nuclear Data Evaluation for Reactor applications
|Number of page(s)||6|
|Section||Decay data and Fission Yields|
|Published online||15 March 2016|
Total Absorption Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra and Decay Heat Calculations
1 SUBATECH, CNRS/IN2P3, Université de Nantes, Ecole des Mines de Nantes, F-44307 Nantes, France
2 Instituto de Fisica Corpuscular (CSIC-Universitat de Valencia), Apartado Correos 22085, E-46071 Valencia, Spain
3 Institute of Nuclear Research, MTA ATOMKI, Debrecen, 4026 Hungary
4 Department of Physics, University of Surrey, Guildford GU27XH, United Kingdom
5 Helsinki Institute of Physics, University of Helsinki, FI-00014 Helsinki, Finland
6 Universitat Politécnica de Catalunya (UPC), 08034 Barcelona, Spain
7 Centro de Investigaciones Energéticas Medioambientales Y Tecnológicas, E-28040 Madrid, Spain
8 Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
9 Argonne National Laboratory, Argonne, IL 60439, USA
10 Present address: Comisión Chilena de Energía Nuclear, Post Office Box 188-D, Santiago, Chile
11 National Physical Laboratory, Teddington, Middlesex, TW11 0LW, United Kingdom
12 Present address: RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
13 National Nuclear Data Center, Brookhaven National Laboratory, Upton NY 11973-5000, USA
14 Present address: Faculty of Physics, Ludwig-Maximilians University Munich, Am Coulombwall 1, D-85748 Garching, Germany
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Published online: 15 March 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 antineutrino detection is used in several fundamental neutrino physics experiments and it can also be used for reactor monitoring and non-proliferation purposes. 92,93Rb are two fission products of importance in reactor antineutrino spectra and decay heat, but their β-decay properties are not well known. New measurements of 92,93Rb β-decay properties have been performed at the IGISOL facility (Jyväskylä, Finland) using Total Absorption Spectroscopy (TAS). TAS is complementary to techniques based on Germanium detectors. It implies the use of a calorimeter to measure the total gamma intensity de-exciting each level in the daughter nucleus providing a direct measurement of the beta feeding. In these proceedings we present preliminary results for 93Rb, our measured beta feedings for 92Rb and we show the impact of these results on reactor antineutrino spectra and decay heat calculations.
© Owned by the authors, published by EDP Sciences, 2016
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