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Fusion Science and Technology
Latest News
Strontium: Supply-and-demand success for the DOE’s Isotope Program
The Department of Energy’s Isotope Program (DOE IP) announced last week that it would end its “active standby” capability for strontium-82 production about two decades after beginning production of the isotope for cardiac diagnostic imaging. The DOE IP is celebrating commercialization of the Sr-82 supply chain as “a success story for both industry and the DOE IP.” Now that the Sr-82 market is commercially viable, the DOE IP and its National Isotope Development Center can “reassign those dedicated radioisotope production capacities to other mission needs”—including Sr-89.
S. W. Haan, D. S. Clark, S. H. Baxamusa, J. Biener, L. Berzak Hopkins, T. Bunn, D. A. Callahan, L. Carlson, T. R. Dittrich, M. J. Edwards, B. A. Hammel, A. Hamza, D. E. Hinkel, D. D. Ho, D. Hoover, W. Hsing, H. Huang, O. A. Hurricane, M. A. Johnson, O. S. Jones, A. L. Kritcher, O. L. Landen, J. D. Lindl, M. M. Marinak, A. J. MacKinnon, N. B. Meezan, J. Milovich, A. Nikroo, J. L. Peterson, P. Patel, H. F. Robey, J. D. Salmonson, V. A. Smalyuk, B. K. Spears, M. Stadermann, S. V. Weber, J. L. Kline, D. C. Wilson, A. N. Simakov, A. Yi
Fusion Science and Technology | Volume 70 | Number 2 | August-September 2016 | Pages 121-126
Technical Paper | doi.org/10.13182/FST15-244
Articles are hosted by Taylor and Francis Online.
Experiments and analysis in the 3 years since the 2012 Target Fabrication Meeting have resulted in significant improvement in understanding of the requirements for high-performance layered implosions. Three issues have been identified that significantly degrade the performance of the implosions as they were originally configured for National Ignition Facility experiments: capsule support system, time-dependent radiation asymmetry, and transverse oxygen nonuniformity in the glow discharge polymer (GDP) ablator. Analyses suggest that the shortfalls in these three areas can explain the degraded performance of the National Ignition Campaign implosions. We present the status of work toward curing these three problems in the standard GDP ablator/gold hohlraum configuration as they affect target fabrication priorities. We also summarize the prospects for alternate ablators that might reduce these degradation mechanisms.