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Effect of Nuclear Elastic Scattering on Neutral Beam Injection Heating in Thermonuclear Plasmas

H. Matsuura, Y. Nakao

Fusion Science and Technology / Volume 47 / Number 3 / April 2005 / Pages 796-800

Technical Paper / Fusion Energy - Plasma Engineering, Heating, Current Drive, and Control / dx.doi.org/10.13182/FST05-A784

An effect of the nuclear elastic scattering (NES) on the neutral beam injection (NBI) plasma heating was examined by solving the Boltzmann-Fokker-Planck (BFP) equation for beam ion in the deuterium-tritium (DT) thermonuclear plasmas. The BFP calculations show that the enhancement in the fraction of the NBI heating power deposited to ions due to NES becomes appreciable when beam energy is larger than 1MeV, and the enhancement is strongly influenced by plasma parameters.