TITLE

Nonlinear dynamics of rotating drift-tearing modes in tokamak plasmas

AUTHOR(S)
Nishimura, S.; Benkadda, S.; Yagi, M.; Itoh, S.-I.; Itoh, K.
PUB. DATE
September 2008
SOURCE
Physics of Plasmas;Sep2008, Vol. 15 Issue 9, p092506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The rotation frequency of the drift-tearing mode is investigated with numerical simulations of reduced two-fluid equations. An extended analytical formula of the rotation frequency of the drift-tearing mode is derived, and is used to analyze numerical results. It is found that the rotation frequency depends strongly on the poloidal zonal flow generated by the drift-tearing mode. The dependence of the rotation frequency on transport coefficients is examined in the nonlinear saturation phase. It is found that ion viscosity μ and parallel resistivity η∥ play important roles by controlling the self-generated zonal flow through the change of the balance between the Reynolds stress and the Maxwell stress. The dependence of the rotation frequency on the magnetic Prandtl number μ/η∥ shows a monotonic increase.
ACCESSION #
34621633

 

Related Articles

  • Recent results from high performance and steady-state researchers in the Japan Atomic Energy... Kimura, H. // Physics of Plasmas;May96, Vol. 3 Issue 5, p1943 

    Presents findings of high-performance and steady-state plasma research on the Japan Atomic Energy Research Institute Tokamak-60 Upgrade. Sawtooth stabilization by ion cyclotron range of frequencies heating; Edge pressure gradient at the onset of edge localized modes; Internal transport barrier...

  • Relaxation of Plasma Rotation in Toroidal Magnetic Confinement Systems. Kovrizhnykh, L. M. // Plasma Physics Reports;Apr2003, Vol. 29 Issue 4, p279 

    A study is made of the relaxation of plasma rotation in nonaxisymmetric toroidal magnetic confinement systems, such as stellarators and rippled tokamaks. In this way, a solution to the drift kinetic equation is obtained that explicitly takes into account the time dependence of the distribution...

  • FUSION RESEARCH PROBLEM SOLVED.  // Power Engineering;Nov2000, Vol. 104 Issue 11, p15 

    Explains the process on how to keep fusion plasma from eroding divertor walls inside tokamak fusion machines. Information on tokamak fusion machines; Importance of the enery-producing plasma research in solving the energy crisis in the United States; Details on the fusion plasma research.

  • news notes.  // Physics Today;Aug2012, Vol. 65 Issue 8, p28 

    The article announces the Experimental Advanced Superconducting Tokamak (EAST) in China sustained a plasma for 411 seconds on June 27, 2012, noting EAST director Jiangang Li said the demonstration is an important step in building an international fusion test reactor in France.

  • Diamagnetic loop for the first plasma in the KSTAR machine. Bak, J. G.; Lee, S. G.; Ka, E. M. // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10F118 

    The diamagnetic loop (DL) is installed for the plasma diamagnetic measurement at the first plasma in the Korea superconducting tokamak advanced research (KSTAR) machine. Experimental results from the position measurement of the DL inside the KSTAR vacuum vessel and the vacuum flux measurement by...

  • Comparison of Nanoparticles Collected in the MAST Tokamak with Those Produced in Laboratory Plasmas. Arnas, C.; Pardanaud, C.; Martin, C.; Roubin, P.; De Temmerman, G.; Pégourié, B.; Hassouni, K.; Lombardi, G.; Bonnin, X.; Michau, A. // AIP Conference Proceedings;11/28/2011, Vol. 1397 Issue 1, p191 

    Among dust particles of various origins collected in the MAST vessel, large quantities of carbon nanoparticles are observed. They are produced in the coldest plasma regions from the nucleation of carbonaceous species originating from physical and chemical erosion of the graphitic plasma facing...

  • Princeton tokomak reaches record plasma ion temperature. Schwarschild, Bertram // Physics Today;Nov86, Vol. 39 Issue 11, p19 

    Reports on the plasma research of the Tokamak Fusion Test Reactor (TFTR) at the Princeton Plasma Physics Laboratory in Princeton, New Jersey. Attainment of the record ion temperature; Goal of TFTR on the confinement of Lawson parameter; Process of high temperature achievement by injection of...

  • Poloidal mode analysis of magnetic probe data in a spherical tokamak configuration. Tojo, H.; Ejiri, A.; Gryaznevich, M. P.; Takase, Y.; Adachi, Y. // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10F120 

    A method to determine the poloidal mode number m in a spherical tokamak based on magnetic probe data was developed. Perturbed magnetic fields at Mirnov coils are calculated for distributed helical filamentary currents on rational surfaces assuming the maximum current amplitude, m and n (toroidal...

  • The next generation of electron cyclotron emission imaging diagnostics (invited). Zhang, P.; Domier, C. W.; Liang, T.; Kong, X.; Tobias, B.; Shen, Z.; Luhmann, N. C.; Park, H.; Classen, I. G. J.; van de Pol, M. J.; Donné, A. J. H.; Jaspers, R. // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10F103 

    A 128 channel two-dimensional electron cyclotron emission imaging system collects time-resolved 16×8 images of Te profiles and fluctuations on the TEXTOR tokamak. Electron cyclotron emission imaging (ECEI) is undergoing significant changes which promise to revolutionize and extend its...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics