Modification of alpha-particle emission spectrum and its verification scenario using 9be+α reaction in beam-injected dt plasmas

Hideaki Matsuura, Yasuyuki Nakao

Research output: Contribution to journalArticlepeer-review


The alpha-particle emission spectrum in beam-injected deuterium-tritium (DT) plasma is examined by solving the Boltzmann-Fokker-Planck (BFP) equations for deuteron, triton and alpha-particle simultaneously. It is shown that owing to the existence of energetic component in fuel-ion energy distribution functions due to neutral-beam injection (NBI) and/or nuclear elastic scattering (NES), the fraction of the energetic (> 3.52MeV) alpha-particle generation rate increases significantly compared with the case for Gaussian distribution. Aiming at an application to plasma diagnostics, correlation between the modification of the emission spectrum and the gamma(γ)-ray generation rate from 9Be(α,nγ)12C reaction is studied.

Original languageEnglish
Pages (from-to)114-118
Number of pages5
JournalFusion Science and Technology
Issue number1
Publication statusPublished - Jul 2009

All Science Journal Classification (ASJC) codes

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

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