Physics Letters B (Aug 2023)

Structure of the prompt neutron multiplicity distribution in the spontaneous fission of 256Rf

  • A.V. Isaev,
  • R.S. Mukhin,
  • A.V. Andreev,
  • Z. Asfari,
  • M.L. Chelnokov,
  • V.I. Chepigin,
  • H.M. Devaraja,
  • O. Dorvaux,
  • B. Gall,
  • K. Hauschild,
  • I.N. Izosimov,
  • A.A. Kuznetsova,
  • A. Lopez-Martens,
  • O.N. Malyshev,
  • A.G. Popeko,
  • Yu.A. Popov,
  • A. Rahmatinejad,
  • B. Sailaubekov,
  • T.M. Shneidman,
  • E.A. Sokol,
  • A.I. Svirikhin,
  • M.S. Tezekbayeva,
  • A.V. Yeremin,
  • N.I. Zamyatin

Journal volume & issue
Vol. 843
p. 138008

Abstract

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An experimental study of 256Rf spontaneous fission following the fusion reaction of 50Ti+208Pb was performed using the velocity filter SHELS of the Flerov laboratory at JINR. The average number of neutrons of ν‾=4.30±0.17 and variance of σν2=3.2 from the prompt neutron multiplicity distribution were obtained. The alpha decay branching ratio of bα=0.003−0.003+0.005 and the half-life of T1/2=(6.7±0.2) ms of the isotope were determined. For the first time, our neutron detector system allowed us to extend investigation of the prompt neutron multiplicity study to the superheavy element region.

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