EPJ Web of Conferences (Jan 2017)

New accurate measurements of neutron emission probabilities for relevant fission products

  • Agramunt J.,
  • Tain J.L.,
  • Albiol F.,
  • Algora A.,
  • Caballero-Folch R.,
  • Calviño F.,
  • Cortes G.,
  • Dillmann I.,
  • Eronen T.,
  • Garcia A.R.,
  • Ganioglu E.,
  • Gelletly W.,
  • Gorelov D.,
  • Guadilla V.,
  • Hakala H.,
  • Jokinen A.,
  • Kankainen A.,
  • Montaner A.,
  • Marta M.,
  • Mendoza E.,
  • Moore I.,
  • Nobs C.,
  • Orrigo S.,
  • Penttila H.,
  • Reponen M.,
  • Rinta-Antila S.,
  • Riego A.,
  • Rubio B.,
  • Saastamoinen A.,
  • Salvador-Castiñeira P.,
  • Tarifeño-Saldivia A.,
  • Tolosa A.,
  • Valencia E.

DOI
https://doi.org/10.1051/epjconf/201714601004
Journal volume & issue
Vol. 146
p. 01004

Abstract

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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.