Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes

E. Westerhof; Stefan Kragh Nielsen; J.W. Oosterbeek; Mirko Salewski; M.R. De Baar; W.A. Bongers; A. Bürger; B.A. Hennen; Søren Bang Korsholm; Frank Leipold; Dmitry Moseev; Morten Stejner Pedersen; D.J. Thoen

doi:10.1103/PhysRevLett.103.125001

Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes

E. Westerhof, Stefan Kragh Nielsen, J.W. Oosterbeek, Mirko Salewski, M.R. De Baar, W.A. Bongers, A. Bürger, B.A. Hennen, Søren Bang Korsholm, Frank Leipold, Dmitry Moseev, Morten Stejner Pedersen, D.J. Thoen

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Abstract

In tokamak plasmas with a tearing mode, strong scattering of high power millimeter waves, as used for heating and noninductive current drive, is shown to occur. This new wave scattering phenomenon is shown to be related to the passage of the O point of a magnetic island through the high power heating beam. The density determines the detailed phasing of the scattered radiation relative to the O-point passage. The scattering power depends strongly nonlinearly on the heating beam power. ©2009 The American Physical Society

Original language	English
Journal	Physical Review Letters
Volume	103
Issue number	12
Pages (from-to)	125001
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.103.125001
Publication status	Published - 2009

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Fusion energy

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10.1103/PhysRevLett.103.125001

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Westerhof, E., Nielsen, S. K., Oosterbeek, J. W., Salewski, M., De Baar, M. R., Bongers, W. A., Bürger, A., Hennen, B. A., Korsholm, S. B., Leipold, F., Moseev, D., Stejner Pedersen, M., & Thoen, D. J. (2009). Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes. Physical Review Letters, 103(12), 125001. https://doi.org/10.1103/PhysRevLett.103.125001

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title = "Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes",

abstract = "In tokamak plasmas with a tearing mode, strong scattering of high power millimeter waves, as used for heating and noninductive current drive, is shown to occur. This new wave scattering phenomenon is shown to be related to the passage of the O point of a magnetic island through the high power heating beam. The density determines the detailed phasing of the scattered radiation relative to the O-point passage. The scattering power depends strongly nonlinearly on the heating beam power. {\textcopyright}2009 The American Physical Society",

keywords = "Fusion energy, Fusionsenergiforskning, Fusionsenergi",

author = "E. Westerhof and Nielsen, {Stefan Kragh} and J.W. Oosterbeek and Mirko Salewski and {De Baar}, M.R. and W.A. Bongers and A. B{\"u}rger and B.A. Hennen and Korsholm, {S{\o}ren Bang} and Frank Leipold and Dmitry Moseev and {Stejner Pedersen}, Morten and D.J. Thoen",

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doi = "10.1103/PhysRevLett.103.125001",

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pages = "125001",

journal = "Physical Review Letters",

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Westerhof, E, Nielsen, SK, Oosterbeek, JW, Salewski, M, De Baar, MR, Bongers, WA, Bürger, A, Hennen, BA, Korsholm, SB, Leipold, F, Moseev, D, Stejner Pedersen, M & Thoen, DJ 2009, 'Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes', Physical Review Letters, vol. 103, no. 12, pp. 125001. https://doi.org/10.1103/PhysRevLett.103.125001

TY - JOUR

T1 - Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes

AU - Westerhof, E.

AU - Nielsen, Stefan Kragh

AU - Oosterbeek, J.W.

AU - Salewski, Mirko

AU - De Baar, M.R.

AU - Bongers, W.A.

AU - Bürger, A.

AU - Hennen, B.A.

AU - Korsholm, Søren Bang

AU - Leipold, Frank

AU - Moseev, Dmitry

AU - Stejner Pedersen, Morten

AU - Thoen, D.J.

PY - 2009

Y1 - 2009

N2 - In tokamak plasmas with a tearing mode, strong scattering of high power millimeter waves, as used for heating and noninductive current drive, is shown to occur. This new wave scattering phenomenon is shown to be related to the passage of the O point of a magnetic island through the high power heating beam. The density determines the detailed phasing of the scattered radiation relative to the O-point passage. The scattering power depends strongly nonlinearly on the heating beam power. ©2009 The American Physical Society

AB - In tokamak plasmas with a tearing mode, strong scattering of high power millimeter waves, as used for heating and noninductive current drive, is shown to occur. This new wave scattering phenomenon is shown to be related to the passage of the O point of a magnetic island through the high power heating beam. The density determines the detailed phasing of the scattered radiation relative to the O-point passage. The scattering power depends strongly nonlinearly on the heating beam power. ©2009 The American Physical Society

KW - Fusion energy

KW - Fusionsenergiforskning

KW - Fusionsenergi

U2 - 10.1103/PhysRevLett.103.125001

DO - 10.1103/PhysRevLett.103.125001

M3 - Journal article

C2 - 19792443

SN - 0031-9007

VL - 103

SP - 125001

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

Strong Scattering of High Power Millimeter Waves in Tokamak Plasmas with Tearing Modes

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