Lithium-ion-beam driven hohlraums for PBFA II

In Sandia’s light ion inertial confinement fusion program, fusion capsules are planned to be driven with an intense x-ray radiation field produced when an intense beam of ions penetrates a radiation case and deposits energy in a foam x-ray conversion region. A first step in the program is to generate and measure these intense fields on the Particle Beam Fusion Accelerator II(PBFA II). Our goal is to generate a 100-eV radiation temperature in lithium-ion-beam driven hohlraums, the radiation environment which will provide the initial drive temperature for ion-beam driven implosion systems designed to achieve high gain. The design of such hohlraum targets and their predicted performance on PBFA II at increasing ion-beam intensities is described.