Eurasian Journal of Physics and Functional Materials (Nov 2021)

Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes

  • A. V. Isaev,
  • A. I. Svirikhin,
  • A. V. Andreev,
  • A. V. Yeremin,
  • I. N. Izosimov,
  • A. N. Kuznetsov,
  • A. A. Kuznetsova,
  • O. N. Malyshev,
  • A. G. Popeko,
  • Yu. A. Popov,
  • E. A. Sokol,
  • M. L. Chelnokov,
  • V. I. Chepigin,
  • T. M. Schneidman,
  • B. .. Gall,
  • O. .. Dorvaux,
  • P. .. Brione,
  • A. .. Sellam,
  • K. .. Hauschild,
  • A. .. Lopez-Martenz,
  • K. .. Rezynkina,
  • S. .. Mullins,
  • P. .. Mosat

DOI
https://doi.org/10.29317/ejpfm.2019030108
Journal volume & issue
Vol. 3, no. 1
pp. 58 – 62

Abstract

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In the last years we carried out several experiments aimed to investigate properties of short-lived SF isotopes. The neutron-deficient isotopes of nobelium were produced in fusion-evaporation reactions using206,208Pb targets and an intense48Ca-beam. Fusion-evaporation residues were separated by the SHELS separator and implanted into a large-area double-sided (48 × 48) strip silicon detector surrounded by3He-based neutron counters. Half-lives and decay branching ratios for252,254No isotopes were measured. The average number of neutrons per spontaneous fission of254No determined for the first time.

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