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Convective transport suppression in the scrape-off layer using Ion Cyclotron resonance heating on the ASDEX upgrade Tokamak

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Abstract
Turbulence properties in the scrape-off layer (SOL) in the presence of ion cyclotron frequency heating (ICRH) are compared to instances where it is absent. The discharges are all in a high-confinement mode (H-mode) regime. During ICRH, the SOL plasma density increases whereas turbulence large-scale and convective structures are shown to be suppressed. The probability distribution function is thus recorded to be closer to a Gaussian, and a net decrease in the low-frequency density fluctuations is reflected in the power spectra. Consequently, the level of turbulent fluctuations decreases significantly. Turbulence suppression is also reported during edge localized modes (ELMs) where both the ELMs-induced transport and duration are strongly affected. The increase of neutrals by gas puffing did not alter this behavior. We deduce that ICRH can be used as to suppress convective transport and reduce the ELM's amplitude.
Keywords
TEXTOR, WAVES, PLASMA EDGE, FREQUENCIES, RANGE, SOL

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MLA
Antar, G et al. “Convective Transport Suppression in the Scrape-off Layer Using Ion Cyclotron Resonance Heating on the ASDEX Upgrade Tokamak.” PHYSICAL REVIEW LETTERS 105.16 (2010): n. pag. Print.
APA
Antar, G., Assas, S., Bobkov, V., Noterdaeme, J.-M., Wolfrum, E., Herrmann, A., & Rohde, V. (2010). Convective transport suppression in the scrape-off layer using Ion Cyclotron resonance heating on the ASDEX upgrade Tokamak. PHYSICAL REVIEW LETTERS, 105(16).
Chicago author-date
Antar, G, S Assas, V Bobkov, Jean-Marie Noterdaeme, E Wolfrum, A Herrmann, and V Rohde. 2010. “Convective Transport Suppression in the Scrape-off Layer Using Ion Cyclotron Resonance Heating on the ASDEX Upgrade Tokamak.” Physical Review Letters 105 (16).
Chicago author-date (all authors)
Antar, G, S Assas, V Bobkov, Jean-Marie Noterdaeme, E Wolfrum, A Herrmann, and V Rohde. 2010. “Convective Transport Suppression in the Scrape-off Layer Using Ion Cyclotron Resonance Heating on the ASDEX Upgrade Tokamak.” Physical Review Letters 105 (16).
Vancouver
1.
Antar G, Assas S, Bobkov V, Noterdaeme J-M, Wolfrum E, Herrmann A, et al. Convective transport suppression in the scrape-off layer using Ion Cyclotron resonance heating on the ASDEX upgrade Tokamak. PHYSICAL REVIEW LETTERS. 2010;105(16).
IEEE
[1]
G. Antar et al., “Convective transport suppression in the scrape-off layer using Ion Cyclotron resonance heating on the ASDEX upgrade Tokamak,” PHYSICAL REVIEW LETTERS, vol. 105, no. 16, 2010.
@article{2947808,
  abstract     = {Turbulence properties in the scrape-off layer (SOL) in the presence of ion cyclotron frequency heating (ICRH) are compared to instances where it is absent. The discharges are all in a high-confinement mode (H-mode) regime. During ICRH, the SOL plasma density increases whereas turbulence large-scale and convective structures are shown to be suppressed. The probability distribution function is thus recorded to be closer to a Gaussian, and a net decrease in the low-frequency density fluctuations is reflected in the power spectra. Consequently, the level of turbulent fluctuations decreases significantly. Turbulence suppression is also reported during edge localized modes (ELMs) where both the ELMs-induced transport and duration are strongly affected. The increase of neutrals by gas puffing did not alter this behavior. We deduce that ICRH can be used as to suppress convective transport and reduce the ELM's amplitude.},
  articleno    = {165001},
  author       = {Antar, G and Assas, S and Bobkov, V and Noterdaeme, Jean-Marie and Wolfrum, E and Herrmann, A and Rohde, V},
  issn         = {0031-9007},
  journal      = {PHYSICAL REVIEW LETTERS},
  keywords     = {TEXTOR,WAVES,PLASMA EDGE,FREQUENCIES,RANGE,SOL},
  language     = {eng},
  number       = {16},
  title        = {Convective transport suppression in the scrape-off layer using Ion Cyclotron resonance heating on the ASDEX upgrade Tokamak},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.105.165001},
  volume       = {105},
  year         = {2010},
}

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