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Article Dans Une Revue Physics of Plasmas Année : 2024

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

P Tretinnikov
E Gusakov
Stéphane Heuraux

Résumé

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

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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⟩
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