Fast deuteron diagnostics using visible light spectra of ³He produced by deuteron–deuteron reaction in deuterium plasmas

The fast deuteron (non-Maxwellian component) diagnostic method, which is based on the higher resolution optical spectroscopic measurement, has been developed as a powerful tool. Owing to decrease in D–H charge-exchange cross section, ability of conventional methods should be improved for ?MeV energy deuterons. Because 3He–H section much larger than that range, visible light (VIS) spectrum 3He produced by dueteron–dueteron (DD) reaction may useful Although density small because it via DD reaction, improvement emissivity VIS can expected using high-energy beam. We evaluate cases when tail formed and not ITER-like beam injected deuterium plasma. Even MeV large change appears half width at maximum spectrum. bremsstrahlung are compared, measurable obtained. It shown tool diagnostics.