DT-DD hybrid pellet for inertial confinement fusion

A proposal here for inertial confinement fusion is to make use of a hybird pellet with DT and DD. The spherical pellet consists of two layers of an inner DT and an outer DD. Alpha particles released from the inner layar due to DT reactions heat the DD fuel and induce reactions in the outer DD layer. Numerical simulations by using a hydrodynamic code make clear the following two facts: 1) The output fusion energy due to DD reactions can exceed the stored energy in the compressed pellet. 2) The critical value of rhoR is about 50 for the enough output fusion energy to a reactor. (author)