Theory of laser-induced adiabat shaping in inertial fusion, implosions: The relaxation method

The theory of the adiabat shaping induced by a strong shock propagating through a relaxed density profile is carried out for inertial confinement fusion (ICF) capsules. The relaxed profile is produced through a laser prepulse, while the adiabat-shaping shock is driven by the foot of the main laser pulse. The theoretical adiabat profiles accurately reproduce the simulation results. ICF capsules with a shaped adiabat are expected to benefit from improved hydrodynamic stability While maintaining the same, one-dimensional performances as flat-adiabat shells. (c) 2005 American Institute Of Physics.