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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.
I. Geoffray, J. Andre, R. Bourdenet, J. Schunck, C. Chicanne, M. Theobald
Fusion Science and Technology | Volume 70 | Number 2 | August-September 2016 | Pages 244-253
Technical Paper | doi.org/10.13182/FST15-221
Articles are hosted by Taylor and Francis Online.
Hydrodynamics growth experiments involve rippled ablator samples (CHx, Ge:CH, or Si:CH). The rippled surface features a microscale mathematical shape (sinusoidal functions are widely used). Nevertheless, experiments have progressed with time, and samples evolved gradually from two-dimensional (planar samples) to three-dimensional geometries (capsules).
This paper presents various processes that have been developed to fulfill such specifications. Various technologies, based on laser means (excimer laser, Ti:sapphire laser) or mechanical ultraprecision means, have been successfully applied to ripples machining (planar samples or capsules).
The main results are discussed showing the ability and accuracy of each technology as well as their main limitations. We focus especially on our latest results (i.e., rippled or grooved capsules).