Neutral recycling effects on ITG turbulence

Stotler, D P; Lang, J; Chang, C S; Churchill, R M; Ku, S -H

doi:10.11578/1562077

Title: Neutral recycling effects on ITG turbulence

Abstract

The effects of recycled neutral atoms on tokamak ion temperaturegradient (ITG) driven turbulence have been investigated in a steepedge pedestal, magnetic separatrix configuration, with the full-fedge gryokinetic code XGC1. Ion temperature gradient turbulence isthe most fundamental and robust edge plasma instability, having a longradial correlation length and an ability to impact other forms ofpedestal turbulence. The neutral atoms enhance the ITG turbulence,first, by increasing the ion temperature gradient in the pedestal viathe cooling effects of charge exchange and, second, by a relativereduction in the ExB shearing rate.

Authors:: Stotler, D P; Lang, J; Chang, C S; Churchill, R M; Ku, S -H

Publication Date:: 2017-08-01

DOE Contract Number:: AC02-09CH11466

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Org.:: U. S. Department of Energy

Keywords:: Tokamak

OSTI Identifier:: 1562077

DOI:: https://doi.org/10.11578/1562077

Citation Formats


                    Stotler, D P, Lang, J, Chang, C S, Churchill, R M, and Ku, S -H. Neutral recycling effects on ITG turbulence.  United States: N. p., 2017. 
        Web.  doi:10.11578/1562077.

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                    Stotler, D P, Lang, J, Chang, C S, Churchill, R M, & Ku, S -H. Neutral recycling effects on ITG turbulence.  United States.  doi:https://doi.org/10.11578/1562077

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                    Stotler, D P, Lang, J, Chang, C S, Churchill, R M, and Ku, S -H. 2017.  
"Neutral recycling effects on ITG turbulence".  United States.  doi:https://doi.org/10.11578/1562077.  https://www.osti.gov/servlets/purl/1562077. Pub date:Tue Aug 01 00:00:00 EDT 2017

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@article{osti_1562077,

  title        = {Neutral recycling effects on ITG turbulence},

  author       = {Stotler, D P and Lang, J and Chang, C S and Churchill, R M and Ku, S -H},

  abstractNote = {The effects of recycled neutral atoms on tokamak ion temperaturegradient (ITG) driven turbulence have been investigated in a steepedge pedestal, magnetic separatrix configuration, with the full-fedge gryokinetic code XGC1. Ion temperature gradient turbulence isthe most fundamental and robust edge plasma instability, having a longradial correlation length and an ability to impact other forms ofpedestal turbulence. The neutral atoms enhance the ITG turbulence,first, by increasing the ion temperature gradient in the pedestal viathe cooling effects of charge exchange and, second, by a relativereduction in the ExB shearing rate.},

  doi          = {10.11578/1562077},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {8}

}

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DOI: https://doi.org/10.11578/1562077

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