Actinide neutron-induced fission up to 200 MeV

Vladimir Maslov, Yurij Porodzinskij, Mamoru Baba, Akira Hasegawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Neutron-induced fission cross sections of U, Np and Pu target nuclides are analyzed in fission/evaporation approximation up to 200 MeV excitation energy. Damping of collective modes contribution to the level density at excitation energies higher than ~20 MeV for saddle and equilibrium deformations is shown to be essential. Effective estimates of intrinsic level densities are obtained. Actinide first-chance fission cross sections of 238U(n, f) and 238U(p, f) reactions are found to be much different. Differences of measured proton- and neutron-induced fission cross sections of 238U are attributed to the influence of the isovector term of the nucleon-nucleus optical potential.

Original languageEnglish
Pages (from-to)80-83
Number of pages4
Journaljournal of nuclear science and technology
Volume39
DOIs
Publication statusPublished - 2002 Aug
Externally publishedYes

Keywords

  • Actinides
  • Intermediate energies
  • Nucleon-induced fission

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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