OEDGE modeling of outer wall erosion in NSTX and the effect of changes in neutral pressure
| Autor: | M. A. Jaworski, Tyler Abrams, C. H. Skinner, J.H. Nichols, D. P. Stotler, Robert Kaita |
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| Rok vydání: | 2015 |
| Předmět: |
Nuclear and High Energy Physics
Fusion Long pulse Materials science Opacity Divertor Nanotechnology Atmospheric-pressure plasma Electron Mechanics Fusion power Materials Science(all) Nuclear Energy and Engineering Duty cycle Sputtering Impurity Erosion Environmental science General Materials Science Atomic physics Scaling |
| Zdroj: | Journal of Nuclear Materials. 463:276-279 |
| ISSN: | 0022-3115 |
| Popis: | As fusion reactors scale up in size, power, and duty cycle, the quantity of material eroded from the plasma-facing components (PFCs) will rise to levels far above those seen in prior experiments, and could hinder proper operation. While reactor scenarios have been developed that feature significant local re-deposition of particles eroded from high-flux divertor targets, these regimes require near-surface electron densities that are far higher than can be expected at the first wall of the rest of the machine1. Without local re-deposition, even small erosion rates at the first wall will present a significant source of migratory material because they are integrated over a large surface area and over long pulse lengths. |
| Databáze: | OpenAIRE |
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