Influence of modified neutron emission spectrum on tritium production performance in blanket systems with NBI-heated deuterium plasma

Tomoki Urakawa, Hideaki Matsuura, Yasuko Kawamoto, Satoshi Konishi

Research output: Contribution to journalArticle


In high-temperature plasma sustained by neutral beam injection heating, the emission spectrum of the neutrons produced by fusion reactions is known to have a modified Gaussian distribution. In this study, neutron transport simulation is carried out for a plasma source that emits neutrons with a modified spectrum and the influence of this modified neutron emission spectrum on the tritium production performance is investigated. The results show that in tritium production using D(d,n)3He neutrons, the rate of the 9Be(n,2n)2α neutron multiple reactions, which has a threshold energy of 2.0 MeV, is significantly enhanced compared with that when a source with a Gaussian neutron emission spectrum was assumed. In addition, the influence of the blanket composition on the tritium production performance is discussed.

Original languageEnglish
Pages (from-to)678-682
Number of pages5
JournalFusion Engineering and Design
Publication statusPublished - Nov 1 2018


All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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