Calculations show that the energy must be delivered quickly in order to create a shock wave, and be focussed evenly across the target's outer surface in order to collapse the fuel into a symmetric core.
Calculations show that the energy must be delivered quickly in order to compress the core before it disassembles and to create a shock wave. The laser beams must also be focussed evenly across the target's outer surface in order to collapse the fuel into a symmetric core.