Energetics of Inertial Confinement Fusion Hohlraum Plasmas

We present the first measurements of radiation temperatures and stimulated scattering losses in laser-driven, gas-filled hohlraums. They show efficient coupling when applying laser beam smoothing techniques. Scattering losses are reduced to the 3% level while the radiation temperatures increased by $\sim 15$ eV for smoothed laser beams. We observe peak radiation temperatures in excess of 230 eV in gas-filled hohlraums consistent with detailed hydrodynamic LASNEX modeling.