Method for Determining Fast-alpha-Particle Confinement in Tokamak Plasmas Using Resonant Nuclear Reactors

摘要

The resonant nuclear reactions D( alpha , gamma ) sup 6 Li, sup 6 Li( alpha , gamma ) sup 10 B, and sup 7 Li( alpha , gamma ) sup 11 B are examined as diagnostics of fast-alpha-particle confinement in tokamak plasmas. Gamma rays from these resonant reactions with energies from 2.1 MeV to 9.2 MeV may be used to infer the alpha-particle population between energies of 0.4 MeV and 2.6 MeV. The ratio of these alpha-burnup reactions to the reactions T(D, gamma ) sup 5 He and sup 3 He(D, gamma ) sup 5 Li provides a technique for the measurement of alpha confinement. (ERA citation 11:030978)