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Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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Fusion Science and Technology
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Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Evelyn M. Fearon, Stephan A. Letts, Leslie M. Allison, Robert C. Cook
Fusion Science and Technology | Volume 31 | Number 4 | July 1997 | Pages 406-410
Technical Paper | Eleventh Target Fabrication Specialists' Meeting | doi.org/10.13182/FST97-A30793
Articles are hosted by Taylor and Francis Online.
In this paper we describe our efforts to produce ICF target capsules with either controlled inner surface roughness or thin metallic diagnostic layers by adapting the decomposable mandrel technique previously developed at LLNL. To modify the capsule's inner surface we laser ablated a pattern on a poly(α-methylstyrene) (PAMS) shell, overcoated it with plasma polymer and then thermally decomposed the inner mandrel to leave the plasma polymer shell with the imprint of the laser ablated mandrel pattern. In this fashion we have been able to produce shells with controlled inner surface bumps. However, these bumps are correlated with outer surface pits. To place a thin metallic diagnostic layer on the inner capsule surface we applied a 50 Å titanium sputter coating to a smooth PAMS shell, overcoated with plasma polymer, and then thermally decomposed the mandrel to leave a plasma polymer shell with the titanium layer on the inner surface. Surface analysis showed that this process resulted in shells with a relatively long wavelength roughness, possibly due to the action of the metallic layer as a permeation barrier.