In this thesis, the relation of carbon influxes to the core carbon concentrations is studied in ASDEX Upgrade plasma discharges. Optical emission spectroscopy is used for the influx measurements and the core carbon concentrations are calculated from the soft-X ray measurements with the coronal equilibrium model. A fit routine of B2.5 is developed to interpret spectroscopic data and determine the transport coefficients at the outer midplane of ASDEX Upgrade. Based on the finding of this thesis, the carbon sources from the divertors are negligible to the main chamber source , which is corroborated from both the analytic and the computational calculations. Despite of tungsten coating, the carbon sources from the inner heat shield are dominant. The transport coefficients at the plasma boundary region are determined using the B2.5 fit routine. For carbon ions, an inward pinch is required to match the measurements. Finally, the effect of the edge localized mode on influxes is discussed.
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In this thesis, the relation of carbon influxes to the core carbon concentrations is studied in ASDEX Upgrade plasma discharges. Optical emission spectroscopy is used for the influx measurements and the core carbon concentrations are calculated from the soft-X ray measurements with the coronal equilibrium model. A fit routine of B2.5 is developed to interpret spectroscopic data and determine the transport coefficients at the outer midplane of ASDEX Upgrade. Based on the finding of this thesis, t...
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