Effect of nuclear elastic scattering on fusion product spectrum in self-sustaining D3He plasmas

The modification of fusion-product emission spectrum from Gaussian distribution due to nuclear elastic scattering (NES) of fuel ion by fusion-produced 14.7-MeV proton in a self-sustaining deuterium-helium-3 (D3He) plasma is accurately evaluated by simultaneously solving the Boltzmann-Fokker-Planck (BFP) equations for deuteron, triton, alpha-particle, proton and 3He. It is shown that the emission spectrums of fusion products, i.e. proton, alpha-particle, triton, 3He, neutron, are significantly modified from Gaussian distributions. The influence of the plasma parameters on the modification is discussed. (author)