New accurate measurements of neutron emission probabilities for relevant fission products
1 Instituto de Fisica Corpuscular, CSIC – Universidad de Valencia, 46980 Paterna, Spain
2 Secció d'Enginyeria Nuclear, Universitat Politecnica de Catalunya, 08028 Barcelona, Spain
3 TRIUMF, Vancouver, British Columbia V6T2A3, Canada
4 University of Jyvaskyla, Department of Physics, PO Box 35, 40014 University of Jyvaskyla, Finland
5 GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
6 Department of Physics, University of Surrey, Guildford GU2 7XH, UK
7 Department of Physics, University of Istanbul, 34134 Vezneciler, Turkey
8 Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, 28040 Madrid, Spain
9 Institute of Nuclear Research of the Hungarian Academy of Sciences, 4001 Debrecen, Hungary
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Published online: 13 September 2017
We have performed new accurate measurements of the beta-delayed neutron emission probability for ten isotopes of the elements Y, Sb, Te and I. These are fission products that either have a significant contribution to the fraction of delayed neutrons in reactors or are relatively close to the path of the astrophysical r process. The measurements were performed with isotopically pure radioactive beams using a constant and high efficiency neutron counter and a low noise beta detector. Preliminary results are presented for six of the isotopes and compared with previous measurements and theoretical calculations.
© The Authors, published by EDP Sciences, 2017
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