High resolution measurements of double differential (n, α) cross sections of 58Ni and natNi between 4.2 and 6.5 MeV neutrons

Toshiya Sanami, Mamoru Baba, Toshihiko Kawano, Shigeo Matsuyama, Takehide Kiyosumi, Yasushi Nauchi, Keiichiro Saito, Naohiro Hirakawa

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11 Citations (Scopus)


Double differential (n, α) reaction cross sections of 58Ni and natNi were measured for 4.2-6.5 MeV neutrons with energy resolution good enough to separate α-particles from the low-lying levels of residual nuclei by using a gridded ionization chamber. Angular distribution and excitation functions were derived for α0, α1 and αi≥2 components (α-particles to the ground level, the 1st level and levels higher than the 2nd level, respectively). The experimental results were compared with these obtained from calculation based on Hauser-Feshbach model employing the optical potential and the level density parameters derived to reproduce the experimental values of total, (n, p) and (n,α)cross sections. The calculation showed fair agreement with the experimental data while it underestimated the (n,α)cross section above 6 MeV.

Original languageEnglish
Pages (from-to)851-856
Number of pages6
Journaljournal of nuclear science and technology
Issue number12
Publication statusPublished - 1998 Dec


  • Alpha particles
  • Angular distribution
  • Double differential cross sections
  • Excitation functions
  • Experimental data
  • Gridded ionization chamber
  • Hauser-Feshbach calculation
  • High energy resolution
  • MeV range 01-10
  • Neutrons
  • Nickel 58
  • Nickel nat
  • Nuclear reactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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