Finding the Elusive E×B Staircase in Magnetized Plasmas

G. Dif-Pradalier; G. Hornung; Ph Ghendrih; Y. Sarazin; F. Clairet; L. Vermare; P. H. Diamond; J. Abiteboul; T. Cartier-Michaud; C. Ehrlacher; D. Estève; X. Garbet; V. Grandgirard; O. D. Gürcan; P. Hennequin; Y. Kosuga; G. Latu; P. Maget; P. Morel; C. Norscini; R. Sabot; A. Storelli

doi:10.1103/PhysRevLett.114.085004

Finding the Elusive E×B Staircase in Magnetized Plasmas

G. Dif-Pradalier, G. Hornung, Ph Ghendrih, Y. Sarazin, F. Clairet, L. Vermare, P. H. Diamond, J. Abiteboul, T. Cartier-Michaud, C. Ehrlacher, D. Estève, X. Garbet, V. Grandgirard, O. D. Gürcan, P. Hennequin, Y. Kosuga, G. Latu, P. Maget, P. Morel, C. NorsciniR. Sabot, A. Storelli

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

98 Citations (Scopus)

Abstract

Turbulence in hot magnetized plasmas is shown to generate permeable localized transport barriers that globally organize into the so-called "ExB staircase" [G. Dif-Pradalier et al., Phys. Rev. E, 82, 025401(R) (2010)]. Its domain of existence and dependence with key plasma parameters is discussed theoretically. Based on these predictions, staircases are observed experimentally in the Tore Supra tokamak by means of high-resolution fast-sweeping X-mode reflectometry. This observation strongly emphasizes the critical role of mesoscale self-organization in plasma turbulence and may have far-reaching consequences for turbulent transport models and their validation.

Original language	English
Article number	085004
Journal	Physical review letters
Volume	114
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.114.085004
Publication status	Published - Feb 27 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.114.085004

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Dif-Pradalier, G., Hornung, G., Ghendrih, P., Sarazin, Y., Clairet, F., Vermare, L., Diamond, P. H., Abiteboul, J., Cartier-Michaud, T., Ehrlacher, C., Estève, D., Garbet, X., Grandgirard, V., Gürcan, O. D., Hennequin, P., Kosuga, Y., Latu, G., Maget, P., Morel, P., ... Storelli, A. (2015). Finding the Elusive E×B Staircase in Magnetized Plasmas. Physical review letters, 114(8), Article 085004. https://doi.org/10.1103/PhysRevLett.114.085004

Dif-Pradalier, G, Hornung, G, Ghendrih, P, Sarazin, Y, Clairet, F, Vermare, L, Diamond, PH, Abiteboul, J, Cartier-Michaud, T, Ehrlacher, C, Estève, D, Garbet, X, Grandgirard, V, Gürcan, OD, Hennequin, P, Kosuga, Y, Latu, G, Maget, P, Morel, P, Norscini, C, Sabot, R & Storelli, A 2015, 'Finding the Elusive E×B Staircase in Magnetized Plasmas', Physical review letters, vol. 114, no. 8, 085004. https://doi.org/10.1103/PhysRevLett.114.085004

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title = "Finding the Elusive E×B Staircase in Magnetized Plasmas",

abstract = "Turbulence in hot magnetized plasmas is shown to generate permeable localized transport barriers that globally organize into the so-called {"}ExB staircase{"} [G. Dif-Pradalier et al., Phys. Rev. E, 82, 025401(R) (2010)]. Its domain of existence and dependence with key plasma parameters is discussed theoretically. Based on these predictions, staircases are observed experimentally in the Tore Supra tokamak by means of high-resolution fast-sweeping X-mode reflectometry. This observation strongly emphasizes the critical role of mesoscale self-organization in plasma turbulence and may have far-reaching consequences for turbulent transport models and their validation.",

author = "G. Dif-Pradalier and G. Hornung and Ph Ghendrih and Y. Sarazin and F. Clairet and L. Vermare and Diamond, {P. H.} and J. Abiteboul and T. Cartier-Michaud and C. Ehrlacher and D. Est{\`e}ve and X. Garbet and V. Grandgirard and G{\"u}rcan, {O. D.} and P. Hennequin and Y. Kosuga and G. Latu and P. Maget and P. Morel and C. Norscini and R. Sabot and A. Storelli",

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AU - Dif-Pradalier, G.

AU - Hornung, G.

AU - Ghendrih, Ph

AU - Sarazin, Y.

AU - Clairet, F.

AU - Vermare, L.

AU - Diamond, P. H.

AU - Abiteboul, J.

AU - Cartier-Michaud, T.

AU - Ehrlacher, C.

AU - Estève, D.

AU - Garbet, X.

AU - Grandgirard, V.

AU - Gürcan, O. D.

AU - Hennequin, P.

AU - Kosuga, Y.

AU - Latu, G.

AU - Maget, P.

AU - Morel, P.

AU - Norscini, C.

AU - Sabot, R.

AU - Storelli, A.

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Finding the Elusive E×B Staircase in Magnetized Plasmas

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