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 journalArticle

Abstract

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
Volume56
Issue number1
DOIs
Publication statusPublished - Jan 1 2009

Fingerprint

Alpha particles
particle emission
alpha particles
emission spectra
Deuterium
Plasmas
Plasma diagnostics
Fokker Planck equation
nuclear scattering
Elastic scattering
Tritium
beam injection
plasma diagnostics
Gaussian distribution
neutral beams
Fokker-Planck equation
tritium
normal density functions
Gamma rays
Distribution functions

All Science Journal Classification (ASJC) codes

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

Cite this

Modification of alpha-particle emission spectrum and its verification scenario using 9be+α reaction in beam-injected dt plasmas. / Matsuura, Hideaki; Nakao, Yasuyuki.

In: Fusion Science and Technology, Vol. 56, No. 1, 01.01.2009, p. 114-118.

Research output: Contribution to journalArticle

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