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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Latest News
Framatome, KHNP to investigate producing Lu-177 in South Korea
Framatome and Korea Hydro & Nuclear Power (KHNP) announced the signing of a memorandum of understanding to explore the possibility of producing the medical isotope Lutetium-177 at KHNP’s Wolsong nuclear power plant in South Korea. The companies also will investigate the feasibility of using the plant to support Korean production of medical radioisotopes in the future.
James P. Blanchard, Qiyang Hu, Nasr Ghoniem
Fusion Science and Technology | Volume 56 | Number 1 | July 2009 | Pages 341-345
High Average Power Laser and Other IFE R&D | Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1) | doi.org/10.13182/FST09-A8925
Articles are hosted by Taylor and Francis Online.
Dry wall laser IFE chambers will experience large, transient heat and particle fluxes as the target yield products reach the wall. These threats, consisting of x-rays, ions, and neutrons, can lead to wall failure caused by transient stresses or as a result of deposited ions in the near-surface layer. We have developed a unified model for the calculation of temperatures, stresses, strains, and fracture behavior in a solid IFE chamber wall. The model is also coupled with ion transport sub-models that assess the effects of ions on the morphology of the wall materials. This paper describes the models incorporated into the new unified simulation and, in particular, presents new fracture models that permit fracture calculations without the need for an advanced finite element calculation. This fracture model assumes that an array of surface cracks is present in the wall surface and uses superposition to calculate the stress intensity factor via a numerical integration of the stress profile computed for an un-cracked geometry. We also describe approaches for computing the stresses due to inertial effects resulting from the rapid heating associated with the IFE threats. In some cases, these inertial effects lead to stress waves that can lead to premature wall damage and must be accounted for in the analysis. This model is based on semi-analytical solutions for stress waves due to shallow heating in a relatively thick solid. The combined thermomechanical model gives us detailed understanding of the fundamental mechanics of rapidly heated surfaces.