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Il Nuovo Cimento A (1965-1970)

, Volume 23, Issue 2, pp 185–199 | Cite as

Fine structures in the mass yield of252Cf fission fragments from a double-energy measurement

  • A. Bertin
  • M. Bruno
  • I. Massa
  • G. Vannini
  • A. Vitale
Article

Summary

We report the results of a measurement of the kinetic energies of the complementary fragments released in the spontaneous fission of252Cf. The pre-neutron emission values of the fragment masses are reconstructed starting from the energies measured. For low excitation energies of the fragments, six fine structures in the mass distribution are observed. These results are discussed referring to previous experimental data, and correlated with preferred even-even charge division in the fission process.

Riassunto

Presentiamo i risultati di una misura delle energie cinetiche dei frammenti di fissione emessi nella fissione spontanea del252Cf. Partendo dalle energie misurate, si ricostruiscono i valori pre-emissione neutronica delle masse dei frammenti. Per basse energie di eccitazione dei frammenti, si sono osservate sei strutture fini nella distribuzione di massa. Questi risultati sono discussi riferendoli a precedenti dati sperimentali e sono correlati con la divisione di carica preferenziale pari-pari nel processo di fissione.

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Copyright information

© Società Italiana di Fisica 1974

Authors and Affiliations

  • A. Bertin
    • 1
    • 2
  • M. Bruno
    • 1
    • 2
  • I. Massa
    • 1
    • 2
  • G. Vannini
    • 1
    • 2
  • A. Vitale
    • 1
    • 2
  1. 1.Istituto di Fisica dell’UniversitàBologna
  2. 2.Istituto Nazionale di Fisica NucleareSezione di BolognaItaly

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