Evaluation of fusion reactivity enhancement due to nuclear plus interference scattering in ³He-containing deuterium plasmas

An effect of nuclear plus interference (NI) scattering on D(d,n)³He, T(d,n)⁴He and ³He(d,p)⁴He reaction rate coefficients in ³He-containing deuterium plasma is evaluated on the basis of the Boltzmann-Fokker-Planck (BFP) analysis model. An energetic ³He beam and/or externally-fueled low-energy ³He enhance the ³He(d,p)⁴He reaction rate from the value for Maxwellian plasma, and increase energetic proton production rate. The energetic protons create the knock-on tail via NI scattering on the fuel-ion velocity distribution functions. It is shown that a recognizable change in the rate coefficients of fusion reactions due to the knock-on tail formation appears. (author)