Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL

doi:https://doi.org/10.1063/1.3273717

Title: Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL

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Abstract

In previous work we studied the propagation of slow-wave resonance cones launched parasitically by a fast-wave antenna into a tenuous magnetized plasma. Here we extend the previous calculation to ''dense'' scrape-off-layer (SOL) plasmas where the usual slow wave is evanescent. Using the sheath boundary condition, it is shown that for sufficiently close limiters, the slow wave couples to a sheath plasma wave and is no longer evanescent, but radially propagating. A self-consistent calculation of the rf-sheath width yields the resulting sheath voltage in terms of the amplitude of the launched SW, plasma parameters and connection length.

Authors:

Myra, J R; D'Ippolito, D A ^[1]

Lodestar Research Corporation, 2400 Central Ave., P-5, Boulder, Colorado, 80301 (United States)

Publication Date:: 2009-11-26

OSTI Identifier:: 21335695

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 1187; Journal Issue: 1; Conference: 18. topical conference on radio frequency power in plasmas, Gent (Belgium), 24-26 Jun 2009; Other Information: DOI: 10.1063/1.3273717; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANTENNAS; BOUNDARY CONDITIONS; ELECTRIC POTENTIAL; ICR HEATING; LIMITERS; PLASMA; PLASMA DENSITY; PLASMA SCRAPE-OFF LAYER; PLASMA SHEATH; PLASMA WAVES; RF SYSTEMS; TOKAMAK DEVICES; WAVE PROPAGATION

Citation Formats


                    Myra, J R, and D'Ippolito, D A. Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL.  United States: N. p., 2009. 
        Web.  doi:10.1063/1.3273717.

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                    Myra, J R, & D'Ippolito, D A. Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL.  United States.  https://doi.org/10.1063/1.3273717

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                    Myra, J R, and D'Ippolito, D A. Thu .  
        "Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL".  United States.  https://doi.org/10.1063/1.3273717.

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@article{osti_21335695,

  title        = {Slow Wave Propagation and Sheath Interaction for ICRF Waves in the Tokamak SOL},

  author       = {Myra, J R and D'Ippolito, D A},

  abstractNote = {In previous work we studied the propagation of slow-wave resonance cones launched parasitically by a fast-wave antenna into a tenuous magnetized plasma. Here we extend the previous calculation to ''dense'' scrape-off-layer (SOL) plasmas where the usual slow wave is evanescent. Using the sheath boundary condition, it is shown that for sufficiently close limiters, the slow wave couples to a sheath plasma wave and is no longer evanescent, but radially propagating. A self-consistent calculation of the rf-sheath width yields the resulting sheath voltage in terms of the amplitude of the launched SW, plasma parameters and connection length.},

  doi          = {10.1063/1.3273717},

  url          = {https://www.osti.gov/biblio/21335695},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 1187,

  place        = {United States},

  year         = {2009},

  month        = {11}

}

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