Onion-peeling inversion of stellarator images
| Autor: | Y. Wei, Francesco Volpe, R. R. Diaz-Pacheco, Kenneth Hammond, Yosef Kornbluth |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics System of linear equations 01 natural sciences 010305 fluids & plasmas law.invention Optics law Physics::Plasma Physics 0103 physical sciences Emissivity 010306 general physics Instrumentation Astrophysics::Galaxy Astrophysics CMOS sensor Pixel business.industry Torus Plasma Physics - Plasma Physics Plasma Physics (physics.plasm-ph) Plasma diagnostics business Stellarator |
| Zdroj: | The Review of scientific instruments. 87(11) |
| ISSN: | 1089-7623 |
| Popis: | An onion-peeling technique is developed for inferring the emissivity profile of a stellarator plasma from a two-dimensional image acquired through a CCD or CMOS camera. Each pixel in the image is treated as an integral of emission along a particular line-of-sight. Additionally, the flux surfaces in the plasma are partitioned into discrete layers, each of which is assumed to have uniform emissivity. If the topology of the flux surfaces is known, this construction permits the development of a system of linear equations that can be solved for the emissivity of each layer. We present initial results of this method applied to wide-angle visible images of the CNT stellarator plasma. Comment: 5 pages, 6 figures |
| Databáze: | OpenAIRE |
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