Tritium Breeding in DT–DD Hybrid Pellet for Inertial Confinement Fusion

抄録

The phenomenology of thermonuclear burn with a secondary reaction is investigated by using a method of numerical simulation for a DT–DD hybrid pellet with a high density. The simulation is carried out by use of a one-dimensional hydrodynamic Lagrangian code, showing the capability of tritium breeding in the hybrid pellet. The breeding ratio in the pellet is clarified to be able to exceed unity when the following two conditions are satisfied. 1) The amount of tritium is remarkably less than the amount of deuterium initially stored in the pellet, so that the amount of tritium produced by DD reactions is beyond the initial amount of tritium. 2) The pellet has a so high temperature and a so high ρR, that the amount of tritium does not decrease anomalously through the secondary DT reaction, because the rate of DT reactions decreases as the temperature increases above 70 keV.