Scrape-off layer turbulence modulated by Mirnov oscillations

M. V.A.P. Heller, I. L. Caldas, A. A. Ferreira, E. A.O. Saettone, A. Vannucci, I. C. Nascimento, J. H.F. Severo

Research output: Contribution to conferencePaper (Contribution to a conference)

9 Scopus citations

Abstract

We investigate plasma turbulence at the scrape-off layer of TCABR tokamak. We apply a power spectral analysis to the magnetic Mirnov oscillations and electrostatic fluctuations, to quantify statistical properties and to estimate the turbulence-driven radial-particle flux. A distinctive peculiarity is the modulation of electrostatic turbulence by the Mirnov oscillations shown by the partial superposition of the frequency power spectra of these two oscillations. This characteristic allows us to investigate any possible influence of the Mirnov oscillations on particle transport. In fact, a significant part of this transport occurs at the Mirnov frequencies. The effect of this modulation is also analyzed for discharges modified by external perturbations, a DC biased electrode or an ergodic magnetic limiter. © Institute of Physics, Academy of Sciences of Czech Republic 2005.
Original languageAmerican English
Pages265-270
Number of pages6
DOIs
StatePublished - 1 Mar 2005
Externally publishedYes
EventCzechoslovak Journal of Physics -
Duration: 1 Mar 2005 → …

Conference

ConferenceCzechoslovak Journal of Physics
Period1/03/05 → …

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    Heller, M. V. A. P., Caldas, I. L., Ferreira, A. A., Saettone, E. A. O., Vannucci, A., Nascimento, I. C., & Severo, J. H. F. (2005). Scrape-off layer turbulence modulated by Mirnov oscillations. 265-270. Paper presented at Czechoslovak Journal of Physics, . https://doi.org/10.1007/s10582-005-0039-5