Use of gamma-ray-generating nuclear reactions for temperature diagnostics of DT fusion plasma - art. no. 026413

A diagnostic application of gamma rays emitted in Li-6+D and Li-6+T nuclear reactions induced by admiring a small amount of Li-6 in DT fusion plasma i s investigated. It is shown that the reaction-produced monochromatic gamma quanta with energies E-gamma = 0.429, 0.478, and 0.981 MeV can be used for ion temperature measurements in DT plasma. The proposed measurements are ex pected to be essentially independent of the plasma density and its local fl uctuations. The required reaction cross sections and the Maxwellian rate pa rameters of the Li-6+T gamma -ray production are calculated within a realis tic nuclear model.