Parametrization of reflectometry fluctuation frequency spectra for systematic study of fusion plasma turbulence

• Published in: Review of scientific instruments Vol. 89; no. 7; p. 073504
• Main Authors: Sun, Y, Sabot, R, Hornung, G, Heuraux, S, Hacquin, S, Verdoolaege, G
• Format: Journal Article
• Language: English
• Published: United States 01.07.2018

We describe a way to parameterize power spectra extracted from fixed-frequency reflectometry data, with a view to systematic studies of turbulence properties in tokamak plasmas. Analysis of typical frequency spectra obtained from a new database suggests decomposition in a set of four key components:...