Calculation of triton confinement and burnup in tokamaks

An analytical investigation is made of the confinement and subsequent burnup of the fusion produced tritons in a deuterium tokamak plasma. Explicit approximations are obtained for the triton confinement factor, clearly displaying the scaling with physical parameters. The importance of pitch angle scattering losses during the triton slowing-down is also estimated. A comparison with experiments and numerical calculations on the FT tokamak shows good qualitative agreement. (author). 16 refs, 5 figs