Alpha-particle losses in a tokamak reactor with current driven by lower hybrid waves

The instantaneous {alpha}-particle losses are found in the presence of an hf field. The kinetic equation for the {alpha}-particle distribution function is found when there is a loss region in velocity space, and the {alpha}-particle fluxes leaving the plasma are calculated as a function of the plasma parameters and the input hf power. The results are analyzed from the standpoint of achieving current drive in a tokamak reactor by means of lower-hybrid waves. 7 refs., 4 figs.