Ion energy containment in uncompressed discharges in the ATC Tokamak

A neo-classical model for ion energy containment in a Tomamak plasma is used to calculate the radial profile of the ion temperature. The ions are assumed to be heated by electron collisions, with supplementary heating by an injected neutral beam, and to lose energy by thermal conduction, particle diffusion and charge-exchange. The calculations are compared with experimental ion temperature data for the ATC Tokamak The temperature increase which results from supplementary neutral injection heating is calculated, and compared with experiment. (author)