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Formation and Characterization of Polyimide Tents for NIF-Target Capsules

Jordan Alexander, Forbes Powell, Mark Hagen, Jeff Guckian, Bobby Warren

Fusion Science and Technology / Volume 49 / Number 4 / May 2006 / Pages 832-837

Technical Paper / Target Fabrication /

Tents meeting current thickness and uniformity/roughness specifications are needed to position ICF target-capsules inside hohlraum assemblies. We have developed a vacuum-forming technique to mold less than 100nm-thick polyimide films into partially-conforming capsule-tents. Characterization of the tents has been performed by an in-house metrology system designed to measure their roughness-and thickness-distributions. This paper will review the results of our tent-forming technique and the characterization of these tents surrounding capsules in hohlraum assemblies.

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