Alteration of Pfirsch–Schlüter transport in tokamaks by all four external sources

Tokamak energy and particle transport are calculated for a plasma in the Pfirsch–Schlüter regime containing all possible external sources: particle, momentum, heat, and heat momentum. The effect of the last source has never been considered previously; its presence makes possible simultaneous control of the impurity flux into the plasma and of the heat flux from the plasma. Examples are given showing that such control is possible with existing neutral beam or rf sources.