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Fusion Science and Technology
Latest News
Seven projects selected for DARPA’s Rads to Watts
The Defense Advanced Research Projects Agency (DARPA) has selected seven teams for its Rads to Watts program, setting off a competition to design radiovoltaic cells capable of providing power in extreme environments such as deep sea and space.
The teams are now working on developing a unit cell, simple demonstrations that their design ideas work. These are expected to be low power but capable of being scaled up into a higher-power array.
Mikhail L. Shmatov, Ronald W. Petzoldt, Emanuil I. Valmianski
Fusion Science and Technology | Volume 43 | Number 3 | May 2003 | Pages 312-320
Technical Paper | Targets and Target Protection During Injection | doi.org/10.13182/FST03-A272
Articles are hosted by Taylor and Francis Online.
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.