Theoretical Modeling and Application of Microwave Reflectometry to Plasma Turbulence Study

We discuss a possibility to reconstruct turbulence fluctuation spectra from single channel microwave reflectometry data. The technique is based on the analytical solution of the full-wave equation of microwave propagation in the axially symmetric plasma. As an illustration, we apply our technique to estimate the fluctuation level and poloidal wavenumber spectrum shape in the ELM-free H mode plasma of the JT-60U tokamak. Keywords: plasma diagnostics, microwave reflectometry, fluctuation spectrum 1