Reconstruction of turbulence characteristics from fluctuation reflectometry measurements in the nonlinear regime - Université de Lorraine Access content directly
Journal Articles Physics of Plasmas Year : 2024

Reconstruction of turbulence characteristics from fluctuation reflectometry measurements in the nonlinear regime

P Tretinnikov
E Gusakov
Stéphane Heuraux

Abstract

The nonlinear theory of radial correlation reflectometry (RCR) predicts that the cross correlation function of a signal follows a Gaussian distribution with a cutoff separation, where the correlation length is determined by both the turbulence amplitude and its radial correlation length. In contrast, phase spectrum analysis provides information solely on the turbulence amplitude. This work describes the possibility of applying both signal analysis methods and demonstrates that turbulence amplitude and radial correlation length can be simultaneously measured using RCR diagnostics in the nonlinear regime.
Fichier principal
Vignette du fichier
HAL_pavel_PoP_24_SH.pdf (1.49 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-04579767 , version 1 (18-05-2024)

Licence

Identifiers

Cite

P Tretinnikov, E Gusakov, Stéphane Heuraux. Reconstruction of turbulence characteristics from fluctuation reflectometry measurements in the nonlinear regime. Physics of Plasmas, 2024, 31, pp.052113. ⟨10.1063/5.0204394⟩. ⟨hal-04579767⟩
0 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More