Nonlinear Drive of Tearing Mode by Microscopic Plasma Turbulence
نویسندگان
چکیده
Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan 1)National Institute for Fusion Science, Toki 509-5292, Japan 2)Center for Promotion of Computational Science and Engineering, Japan Atomic Energy Agency, Tokyo 110-0015, Japan 3)Physics Department, University of California San Diego, CA 92093-0354, USA 4)Department of Nuclear Engineering, Kyoto University, Kyoto 606-8501, Japan
منابع مشابه
Multi-scale interaction among neoclassical tearing mode and drift wave turbulence
Abstract. The multi-scale interaction among the tearing mode and the drift wave is investigated using reduced MHD model including the electron viscosity. It is newly found that the fluctuating bootstrap current in the Ohm’s law gives rise to a new instability for the regime where the tearing mode is stable. The stability depends on the dissipations and kinetic effects. This result implies that ...
متن کاملMultiscale interaction of a tearing mode with drift wave turbulence: A minimal self-consistent model
A minimal self-consistent model of the multiscale interaction of a tearing mode with drift wave turbulence is presented. A tearing instability in a cylindrical plasma interacting with electrostatic drift waves is considered, for reasons of simplicity. Wave kinetics and adiabatic theory are used to treat the feedback of tearing mode flows on the drift waves via shearing and radial advection. The...
متن کاملMulti-scale Interaction between MHD, Turbulence and Transport in Tokamak Plasmas
The recent achievement in the simulation study of multi-scale interaction among MHD, turbulence and transport is reported. Firstly, we discuss the formation and collapse of Internal Transport Barrier (ITB) in Tokamaks. The meso-scale structures are generated by three-wave interaction among drift wave turbulence. These structures interact each other, which generate the global mode around barrier...
متن کاملProbing plasma turbulence by modulating the electron temperature gradient
Citation DeBoo, J. C. et al. " Probing plasma turbulence by modulating the electron temperature gradient. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The local...
متن کاملNonlinear instability in simulations of Large Plasma Device turbulence
Several simulations of turbulence in the Large Plasma Device (LAPD) [Gekelman et al., Rev. Sci. Instrum. 62, 2875 (1991)] are energetically analyzed and compared with each other and with the experiment. The simulations use the same model, but different axial boundary conditions. They employ either periodic, zero-value, zero-derivative, or sheath axial boundaries. The linear stability physics is...
متن کامل