Effect of the Spatial Distribution of Plasma Parameters on the Operation of a Fusion Reactor

The operation of a fusion reactor on a fuel alternative to the D–T (D–D, Cat –DD, D– 3 He, p – 11 B, and p – 6 Li) requires a higher fuel mixture temperature and a longer energy confinement time in the plasma. It is shown that for a fixed fusion reaction power, an increase in the plasma parameters peaking reduces the power required for additional plasma heating. In addition, the peaking of the plasma parameters reduces the radiation loss in the plasma. All this softens the requirements to the operation conditions of fusion reactors.