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Tuesday, July 14, 2020 | History

2 edition of Analytical theory of draft waves and drift alfven eaves in tokamaks found in the catalog.

Analytical theory of draft waves and drift alfven eaves in tokamaks

Y. C Lee

Analytical theory of draft waves and drift alfven eaves in tokamaks

by Y. C Lee

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  • 19 Currently reading

Published by Dept. of Energy, Plasma Physics Laboratory, for sale by the National Technical Information Service in Princeton, N.J, [Springfield, Va.] .
Written in English

    Subjects:
  • Plasma instabilities,
  • Plasma waves

  • Edition Notes

    Statementby Y. C. Lee and L. Chen, Plasma Physics Laboratory, Princeton University
    SeriesPPPL ; 1512
    ContributionsChen, Liu, 1946- joint author, United States. Dept. of Energy, Princeton University. Plasma Physics Laboratory
    The Physical Object
    Pagination14 p. :
    Number of Pages14
    ID Numbers
    Open LibraryOL14882504M

    With the electrostatic gyrokinetic equation derived in section , in this section we describe the electrostatic drift wave theory. In chapter 2 we discussed the ideal MHD mode spectrum. In particular, we noted that there exists the sound wave spectrum, which is . Drift waves. Kinetic Alfven waves. Coupling of the drift wave, ion-acoustic and shear Alfven waves. Drift wave eigenmodes in a sheared magnetic field. Symmetries of the drift wave eigenmodes. Outgoing wave boundary conditions. Ion acoustic wave turbulence. Drift waves and transport in the text tokamak.

    Ideal-magnetohydrodynamic theory of low-frequency Alfven waves in the H-1 Heliac Plasma Physics and Controlled Fus 5 () Chang L, Hole M, Caneses J, Chen G, Blackwell B, Corr C. (source: Nielsen Book Data) Guided-Wave-Produced Plasmas provides an up-to-date report of the physics of plasmas produced by the high-frequency electromagnetic fields of guided waves. The modelling of discharges generated by travelling surface waves is presented using a unified approach based on modern aspects of nonlinear plasma theory.

    An analytical tokamak equilibrium theory is presented to demonstrate the Shafranov shift and how the toroidal hoop force can be balanced by the application of a vertical magnetic field in tokamaks. In addition to advanced theories, this book also discusses the intuitive physics pictures for various experimentally observed phenomena. The U.S. Department of Energy's Office of Scientific and Technical Information.


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Analytical theory of draft waves and drift alfven eaves in tokamaks by Y. C Lee Download PDF EPUB FB2

Get this from a library. Analytical theory of draft waves and drift alfven eaves in tokamaks. [Y C Lee; Liu Chen; United States. Department of Energy.; Princeton University. Plasma Physics Laboratory.]. The investigation of the scattering of lower-hybrid waves by density fluctuations arising from drift waves in tokamaks is distinguished by the presence in the wave.

The propagation of the m=-1 slow wave and the m=+1 fast wave was consistent with theory but there was a discrepancy for the m=+1 slow wave. The m=-1 fast wave was not observed to propagate. ViewAuthor: N. Cramer. It is shown that fast drift Alfvén waves can be excited in tokamak plasmas by an external antenna operating in the low-frequency band.

The dispersion of these waves depends on the derivative of the. Reviews recent developments in the theory of MHD waves in connection with radio-frequency heating in the Alfven wave and ion cyclotron ranges of frequencies (AWRF, ICRF).

The theoretical framework of the general fishbone-like dispersion relation (GFLDR), presented and discussed in the Companion Paper [Phys. Plas ()], is applied to cases of practical interest of shear/drift Alfvén waves (SAWs/DAWs) excited by energetic particles (EPs) in toroidal fusion plasmas.

These applications demonstrate that the GFLDR provides a unified. The DAEPS code is dedicated to providing a thorough understanding of low frequency modes in collisionless plasmas, e.g., shear Alfvén wave SAW and drift Alfvén wave physics with an energetic.

The effects of nonresonating hot ions on the spectrum of magnetohydrodynamic (MHD) waves and instabilities in tokamaks are studied in the limit when the width of the hot ion drift orbits is much larger than the radial scale length of the MHD perturbations.

Due to the large magnetic drift velocities the hot ions cannot contribute to the MHD perturbations directly, but two main effects of the. Heating experiments are made in Heliotron D device with use of the shear Alfven wave.

It is found that the plasma electrons in the central region of the plasma column is effectively heated in the high electron temperature case, and the electrons near the spatial resonance of the shear Alfven wave is heated in the low temperature case.

A linear gyrokinetic system for arbitrary wavelength electromagnetic modes is developed. A wide range of modes in inhomogeneous plasmas, such as the internal kink modes, the toroidal Alfvén eigenmode (TAE) modes, and the drift modes, can be recovered from this system.

The inclusion of most of the interesting physical factors into a single framework enables one to look at many familiar modes. A study of drift, Alfven and tearing modes in a nonuniform plasma with sheared magnetic fields: P. Kaw: True, Michael A. Drift waves in inhomogeneous plasmas with shear and temperature gradients: H.

Okuda: Schuss, Jack J. Thomson scattering measurements of plasma turbulence near quarter-critical density in a CO2 laser-heated gas target. Gyrokinetic simulations of Clike field-reversed configuration (FRC) find that electrostatic drift-waves are locally stable in the core.

The stabilization mechanisms include finite Larmor radius effects, magnetic well (negative grad-B), and fast electron short circuit effects. Heating in Toroidal Plasmas Proceedings of the 2nd Joint Grenoble–Varenna International Symposium, Como, Italy, 3–12 September   A conclusive theory of energetic particle generation during magnetic reconnection still remains to be developed.

An overview of the physics principles and current status of this work can be found in and. The relevance of space plasmas observations and analysis to RE generation in tokamaks is not apparent at this point.

Another fundamental wave in magnetic confined plasmas is the parallel acoustic wave (sound wave). Since plasma can move freely along the magnetic field lines without being affected by the Lorentz force, parallel acoustic waves can prevail in plasmas.

The various types of electrostatic drift waves are related to the parallel acoustic wave. This book describes the advanced stability theories for magnetically confined fusion plasmas, especially in tokamaks.

As the fusion plasma sciences advance, the gap between the textbooks and cutting-edge researches gradually develops. This book fills in this gap.

Building on analytical theory, a fast numerical tool, STAE-K, has been developed to solve the resulting eigenvalue problem usingmore» The code, which can be used for parameter scans, is applied to tokamaks and the stellarator Wendelstein 7-X.

High energetic-ion pressure leads to large growth rates of the TAEs and to their conversion into. The 26th IAEA Fusion Energy Conference is being organized by the IAEA in cooperation with the National Institute for Fusion Science, Japan.

Previous conferences in this series were held in Salzburg (), Culham (), Novosibirsk (), Madison (), Tokyo (), Berchtesgaden (), Innsbruck (), Brussels (), Baltimore (), London (), Kyoto (), Nice ( Drift Wave Models for Three-Dimensional Plasmas: Fast particle modifications to equilibria and resulting changes to Alfvén wave modes in tokamaks Plasma Physics and Controlled Fus 1() Ideal-magnetohydrodynamic theory of low-frequency Alfven waves in the H-1 Heliac Plasma Physics and Controlled Fus 5().

Magnetohydrodynamic Stability of Tokamaks Hartmut Zohm. This book bridges the gap between general plasma physics lectures and the real world problems in MHD stability. In order to support the understanding of concepts and their implication, it refers to real world problems such as toroidal mode coupling or nonlinear evolution in a conceptual.

Journal Article: Analytical theory of the shear Alfvén continuum in the presence of a magnetic [email protected]{osti_, title = {Structure and damping of toroidal drift waves (and their implications for anomalous transport)}, author = {Taylor, J B and Connor, J and Wilson, H R}, abstractNote = {The conventional theory of high-n toroidal drift waves, based on the ballooning representation, indicates that shear-damping is generally reduced in a torus compared to its plane-slab value.Toroidal drift waves with unconventional mode structures and non-ground eigenstates, which differ from typical ballooning structure mode, are found to be important recently by large scale global gyrokinetic simulations and especially become dominant at strong gradient edge plasmas [cf., Xie and Xiao, Phys.

Plasmas, 22, ()].