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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
Jinglin Huang, Yansong Liu, Kai Du, Zhibing He, Yongjian Tang
Fusion Science and Technology | Volume 71 | Number 2 | February 2017 | Pages 187-195
Technical Paper | doi.org/10.13182/FST15-237
Articles are hosted by Taylor and Francis Online.
High-Z (Z is an atomic number) metals are often deposited on hollow glass or polymer microspheres to improve the implosion efficiency of targets in inertial confinement fusion experiments. Smooth and crack-free thick tungsten coatings on glow discharge polymer shells have been deposited via copper doping by direct-current magnetron sputtering. Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and a white light interferometer were used to characterize the microstructure, composition, phase evolution, and surface roughness of tungsten coatings. The copper atoms with appropriate amounts were found to form a supersaturated solid solution with tungsten, which can serve to refine the grains of these coatings and to smooth their surface. Copper atoms in tungsten coatings were also found to stabilize the metastable β-phase W. This β-phase W is believed to play a key role in the evolution of the size and morphology of the grains of tungsten coatings. This may become a probable method to fabricate high-Z coated targets via doping.