Reducing the convergence ratio of high gain ICF targets

Two ways of reducing the convergence ratio of high gain inertially confined fusion (ICF) targets have been studied using computer simulations. The convergence ratio decreases faster than predicted by the simple geometrical scaling law when the initial gaseous D-T density of the target is increased. Reducing the convergence ratio by changing the driver pulse shape is not energy efficient because the cold D-T cannot be assembled in the desirable manner. (author). 5 refs, 6 figs, 1 tab