A Verification Scenario of Knock-on Tail Formation due to Nuclear Plus Interference Scattering in ³He-Containing Deuterium Plasmas

Abstract

A scenario to verify the knock-on tail formation in deuteron distribution function by nuclear plus interference (NI) scattering and validate the Boltzmann-Fokker-Planck (BFP) model is proposed. Deuterium plasma with ³He-beam injection is considered and on the basis of the BFP model, knock-on tail formation in deuteron distribution function by energetic protons and the resulting modification of the neutron emission spectrum are examined. A recognizable change in the energetic-neutron emission rate due to the knock-on tail formation is presented. The noise neutrons for the measurement arising from the T(d,n)⁴He reaction is also evaluated by continuous-energy Monte Carlo transport simulation. The influence of the noise (slowing-down) neutrons on the measurement is discussed.