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Going Nuclear: Notes from the officially unofficial book tour
I work in the analytical labs at one of Europe’s oldest and largest nuclear sites: Sellafield, in northwestern England. I spend my days at the fume hood front, pipette in one hand and radiation probe in the other (and dosimeter pinned to my chest, of course). Outside the lab, I have a second job: I moonlight as a writer and public speaker. My new popular science book—Going Nuclear: How the Atom Will Save the World—came out last summer, and it feels like my life has been running at full power ever since.
Michael McElfresh, Janelle Gunther, Craig Alford, Eric Fought, Robert Cook, Abbas Nikroo, Hongwei Xu, Jason C. Cooley, Robert D. Field, Robert E. Hackenberg, Art Nobile
Fusion Science and Technology | Volume 49 | Number 4 | May 2006 | Pages 786-795
Technical Paper | Target Fabrication | doi.org/10.13182/FST49-786
Articles are hosted by Taylor and Francis Online.
The sputtering of beryllium (Be) has been used at LLNL for nearly 30 years in the fabrication of laser targets. Several years ago the prospect of using sputtering to fabricate spherical Be capsules for National Ignition Facility (NIF) targets began to be explored and a basic strategy was developed that involved sputtering down onto plastic mandrels bouncing in a pan. While this appears to be very straightforward in principle, in practice sputtering has been used almost exclusively to make thin films (< 1 micron) on flat substrates. Thick films pose a significant challenge for sputtering while materials on spherical substrates are essentially unexplored. More recently, based on computational results, the point design for the first NIF ignition target capsule was specified as a Be capsule with Cu-doped layers of specific thickness, each layer with a different concentration of copper. While the work described here was motivated by the need to make these layered capsules, progress has been made in developing a more complete metallurgical understanding of the materials that are fabricated and the relationship between the sputter processing and microstructure of these spherical samples.