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Measures to Provide Survival of the Direct Drive and Fast Ignition, Direct Compression Targets in the Reaction Chamber

Mikhail L. Shmatov, Ronald W. Petzoldt, Emanuil I. Valmianski

Fusion Science and Technology

Volume 43 / Number 3 / May 2003 / Pages 312-320


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Protection of the direct-drive thermonuclear targets in the reaction chamber by containers of several kinds is considered. Thermoinsulation of the cryogenic thermonuclear fuel by a target ablator consisting of two layers separated by vacuum, low-density gas, or low-density foam is also considered. It is shown that the cones that provide a beam channel for heating the compressed fuel in some of the fast ignition, direct compression scenarios can also serve as effective wake shields protecting the fuel capsules.

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