Ternary particle emission in spontaneous fission of 250Cf and 252Cf and in neutron induced fission of 249Cf and 251Cf

Research output: Contribution to journalArticle

Authors

  • S. Vermote
  • C. Wagemans
  • O. Serot
  • Jan Heyse
  • J. Van Gils
  • T. Soldner
  • P. Geltenbort
  • I. AlMahamid
  • G. Tian
  • L. Rao

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Abstract

The emission probabilities and the energy distributions of tritons, α and 6He particles emitted in the spontaneous ternary fission (zero excitation energy) of 250Cf and 252Cf and in the cold neutron induced fission (excitation energy ≈6.5 MeV) of 249Cf and 251Cf are determined. The particle identification was done with suited ΔE–E telescope detectors, at the IRMM (Geel, Belgium) for the spontaneous fission and at the ILL (Grenoble, France) for the neutron induced fission measurements. Hence particle emission characteristics of the fissioning systems 250Cf and 252Cf are obtained at zero and at about 6.5 MeV excitation energies. While the triton emission probability is hardly influenced by the excitation energy, the 4He and 6He emission probability in spontaneous fission is higher than for neutron induced fission. This can be explained by the strong influence of the cluster preformation probability on the ternary particle emission probability.

Details

Original languageEnglish
Pages (from-to)176-194
JournalNuclear Physics A
Volume837
Issue number3-4
DOIs
Publication statusPublished - 11 Mar 2010

Keywords

  • Nuclear reactions, radioactivity, 249Cf(n, f), 251Cf(n, 250Cf(SF), 252Cm(SF), neutron induced fission, spontaneous fission, measured, ternary fission α, triton emission probabilities, 6He, energy distributions

ID: 271733