Study of the radiation temperature on ablator by using the shock wave technique

Abstract

A new diagnostic platform for more accurate diagnosis peak radiation temperature on ablator has been proposed. Nearly constant radiation temperature was obtained by 2-LEHs spherical hohlraum. And peak radiation temperature on ablator was determined by the shock wave technique. A high quality burn-through image of 2-step-shaped Au ablator was obtained in the experiment. The simulated mass ablation rate agrees well with the experimental result. On the other hand, the peak radiation temperature measured by flat-response X-ray detector(F-XRD) outside the hohlraum was of ~20eV's lower than that obtained by the shock wave technique. This deviation may result in ~20%'s decrease of mass ablation rate in simulation. Thus the new diagnostic platform can provide more accurate peak radiation temperature diagnosis. It can greatly support the ICF ignition target design.