Journal
PHYSICS OF PLASMAS
Volume 14, Issue 11, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2812706
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Experiments have been performed on the OMEGA Laser Facility [T. R. Boehly , Opt. Commun. 133, 495 (1997)] to study the hydrodynamics of directly driven cone-in-shell, fast-ignitor targets. A 35 degrees or 70 degrees opening-angle gold cone was inserted into spherical plastic shells of similar to 24-mu m thickness and similar to 870-mu m diameter, which were imploded with up to 21 kJ of 351-nm laser light. A backlighter was used on some experiments to compare the fuel assembly of targets with or without a high-pressure fill gas. The shock breakthrough to the inside of the cone, where the ultrafast laser propagates in integrated fast-ignitor experiments, was studied using a streaked optical pyrometer. No plasma was seen inside the cone before the assembled core reached peak compression. (C) 2007 American Institute of Physics.
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