Neutron Spectra from Beam-Heated Fusion Plasmas. Research and Training Program on Controlled Thermonuclear Fusion and Plasma Physics (Eur-Ne)

摘要

Studies of neutron emission rates and energy distributions were carried out for hot Maxwellian deuterium and tritium plasmas (several keV) and for Maxwellian deuterium and tritium plasmas heated by injected neutral deuterium beams. A numerical method was used to determine neutron energy spectra as a function of the plasma parameters. Experimental results indicate that neutron spectra resulting from beam-plasma and plasma-plasma interactions exhibit well defined energy separation characteristics for certain parameter ranges. Neutrons from plasma-plasma interaction provide information about the ion temperature and in some cases, ion density. Neutron spectra and reactivities plasma interactions depend strongly on the beam deposition profile, electron temperature and effective plasma charge.