Energy-resolved X-ray Imaging For Magnetically Confined Fusion Plasmas: Measurement Of Impurity Concentration And Thermal And Non-Maxwellian Electron Distributions
Authors: L. Delgado-Aparicio, et. al.
Abstract:
X-ray imaging of magnetically confined fusion (MCF) plasmas in multiple energy ranges offers the opportunity of
measuring, simultaneously, various important plasma properties. The space, time and energy-resolved measurements
can be used to produce images of impurity concentrations (nZ and Zeff ) - from the absolute image intensity at
different energy bands - and the electron energy distribution function, both thermal (Te ) and non-Maxwellian (ne,nM )
- from the variation of emissivity with x-ray energy. This capability also enables the study of the formation of RF-driven
non-Maxwellian "tails" (e.g. ECRH, ECCD and LHCD) and the production of anisotropic hard x-ray
distributions during electron runaway generation and its mitigation.
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Submitted to: PPPL Reports
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Download PPPL-4977 (pdf KB pp)
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