Sarkis, R.R.SarkisDumerat, N.N.DumeratSchmid, B.B.SchmidTovar, GünterGünterTovarRamisch, M.M.Ramisch2025-05-082025-05-082025https://publica.fraunhofer.de/handle/publica/48742710.1103/PhysRevE.111.0452072-s2.0-105002689349The dynamical interplay between turbulent particle transport and Reynolds stress at the edge of toroidal magnetically confined plasmas is experimentally investigated on the basis of the cross-coupling between density and potential fluctuations in drift-wave turbulence. Both and are found to be temporally anticorrelated, with a dynamical coupling of the density and potential fluctuations as an agent in their interplay. The density-potential coupling is shown for the first time to be dynamically related to the Reynolds stress in agreement with the vortex-tilting mechanism. Consistently, a temporal deterioration of the coupling links the evolution of particle transport to the drop in the Reynolds stress. Small-scale contributions are shown to play a key role via a mutual stabilization-destabilization process.enfalsejournal article