On physical parameters study of direct drive in inertial confinement fusion

In this article, the physical concepts and effective parameters on direct drive have been studied. For achieving to a high core gain we have been studied central spark ignition. In isobaric model of central spark ignition we have been obtained the conditional of hot spot formation and energy gain. In isochoric model of central spark ignition we have been gained fuel gain. Finally we have been studied fast ignition and gained fuel gain.