Nonlinear growth of zonal flows by secondary instability in general magnetic geometry

Plunk, G. G.; Navarro, A. Bañón

doi:10.1088/1367-2630/aa5fdf

Title: Nonlinear growth of zonal flows by secondary instability in general magnetic geometry

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Abstract

Here we present a theory of the nonlinear growth of zonal flows in magnetized plasma turbulence, by the mechanism of secondary instability. The theory is derived for general magnetic geometry, and is thus applicable to both tokamaks and stellarators. The predicted growth rate is shown to compare favorably with nonlinear gyrokinetic simulations, with the error scaling as expected with the small parameter of the theory.

Authors:: Plunk, G. G.; Navarro, A. Bañón

Publication Date:: Wed Feb 01 00:00:00 EST 2017

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC); European Union (EU)

OSTI Identifier:: 1437702

Alternate Identifier(s):: OSTI ID: 1393855

Grant/Contract Number:: DEAC02-05CH11231; AC02-05CH11231; 277870

Resource Type:: Published Article

Journal Name:: New Journal of Physics

Additional Journal Information:: Journal Name: New Journal of Physics Journal Volume: 19 Journal Issue: 2; Journal ID: ISSN 1367-2630

Publisher:: IOP Publishing

Country of Publication:: United Kingdom

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; stellarators; magnetic confinement fusion; plasma turbulence; zonal flows; nonlinear stability

Citation Formats


                    Plunk, G. G., and Navarro, A. Bañón. Nonlinear growth of zonal flows by secondary instability in general magnetic geometry.  United Kingdom: N. p., 2017. 
Web.  doi:10.1088/1367-2630/aa5fdf.

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                    Plunk, G. G., & Navarro, A. Bañón. Nonlinear growth of zonal flows by secondary instability in general magnetic geometry.  United Kingdom.  https://doi.org/10.1088/1367-2630/aa5fdf

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                    Plunk, G. G., and Navarro, A. Bañón. Wed .  
"Nonlinear growth of zonal flows by secondary instability in general magnetic geometry".  United Kingdom.  https://doi.org/10.1088/1367-2630/aa5fdf.

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@article{osti_1437702,

  title        = {Nonlinear growth of zonal flows by secondary instability in general magnetic geometry},

  author       = {Plunk, G. G. and Navarro, A. Bañón},

  abstractNote = {Here we present a theory of the nonlinear growth of zonal flows in magnetized plasma turbulence, by the mechanism of secondary instability. The theory is derived for general magnetic geometry, and is thus applicable to both tokamaks and stellarators. The predicted growth rate is shown to compare favorably with nonlinear gyrokinetic simulations, with the error scaling as expected with the small parameter of the theory.},

  doi          = {10.1088/1367-2630/aa5fdf},

  journal      = {New Journal of Physics},

  number       = 2,

  volume       = 19,

  place        = {United Kingdom},

  year         = {Wed Feb 01 00:00:00 EST 2017},

  month        = {Wed Feb 01 00:00:00 EST 2017}

}

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