An Improved Calculation on the Enhancement of Fusion Reaction Rate in a Driven Reactor

In a recent effort to produce fissile material in the blanket of a fusion-fission hybrid reactor.^1,2 it is expected that the wave heating might enhance the fusion reaction rate by a factor of 5 in the experimental reactor and by a factor of 2 in the demonstration reactor. Therefore, Fokker Planck equation with ICRH has been solved to obtain the non-maxwellian distribution function for deuterons. It is pointed that Krapchev's paper³might lead to an overoptimistic result due to the improper reaction cross-section formula which is supposed to be applied only for low energy cases. Using the correct cross-section formula⁴, the calculations show that it is necessary to invoke other kind of non-maxwellian distribution function. Nonequipotential magnetic surfaces⁵in H-mode may cause such non-maxwellian distribution function.