Open AccessEffects of 2D and Finite Density Fluctuations on O-X Correlation Reflectometry
Author(s) -
G. J. Kramer,
R. Nazikian,
E. Valeo
Publication year - 2001
Language(s) - English
Resource type - Reports
DOI - 10.2172/787719
Subject(s) - reflectometry , correlation , mode (computer interface) , core (optical fiber) , physics , plasma , computational physics , optics , condensed matter physics , mathematics , quantum mechanics , geometry , computer science , time domain , computer vision , operating system
The correlation between O-mode and X-mode reflectometer signals is studied with a 1D and 2D reflectometer model in order to explore its feasibilities as a q-profile diagnostic. It was found that 2D effects and finite fluctuation levels both decrease the O-X correlation. At very low fluctuation levels, which are usually present in the plasma core, there is good possibility to determine the local magnetic field strength and use that as a constraint for the equilibrium reconstruction