Journal
PHYSICS OF PLASMAS
Volume 15, Issue 5, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2885197
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Shock ignition is a two-step inertial confinement fusion concept where a strong shock wave is launched at the end of the laser pulse to ignite the compressed core of a low-velocity implosion. Initial shock-ignition technique experiments were performed at the OMEGA Laser Facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] using 40-mu m-thick, 0.9-mm-diam, warm surrogate plastic shells filled with deuterium gas. The experiments showed a significant improvement in the performance of low-adiabat, low-velocity implosions compared to conventional hot-spot implosions. High areal densities with average values exceeding similar to 0.2 g/cm(2) and peak areal densities above 0.3 g/cm(2) were measured, which is in good agreement with one-dimensional hydrodynamical simulation predictions. Shock-ignition technique implosions with cryogenic deuterium and deuterium-tritium ice shells produced areal densities close to the 1D prediction and achieved up to 12% of the predicted 1D fusion yield. (c) 2008 American Institute of Physics.
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