Kinetics and energy balance of D-3He thermonuclear fuel cycle

Analysis of the energy balance is performed on the basis of classical kinetic model of low-radiation thermonuclear fuel D-³He cycle within the central section of the ambipolar reactor. Thermonuclear reactions proceeding in the plasma, and the external heating required for maintenance of the necessary fuel temperature, are the energy sources. Main losses are: the axial (longitudinal) loss with particles drift from the confinement region in the velocity space; the radial loss due to the diffusion transverse to magnetic field which is connected with the development of microinstabilities in the inhomogeneous plasma; braking and cyclotron radiations. The influence of the thermonuclear ash forced removal on the D-³He cycle efficiency, is considered. It is shown that the combustion process can proceed with power amplification coefficient in the central section plasma Q_pl > 10.