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Wednesday, August 12, 2020 | History

4 edition of On supplementary heating of fusion plasmas by means of Alfven waves. found in the catalog.

On supplementary heating of fusion plasmas by means of Alfven waves.

by J. A. Tataronis

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  • 36 Currently reading

Published by Courant Institute of Mathematical Sciences, New York University in New York .
Written in English


Edition Notes

StatementBy John A. Tataronis and W. Grossman.
ContributionsGrossmann, William
The Physical Object
Pagination101 p.
Number of Pages101
ID Numbers
Open LibraryOL17981396M

working on smaller plasma devices, it is expected that this conference will, as in the past, serve to identify possibilities and means for continuous and effective international collaboration in this area. The 26th IAEA Fusion Energy Conference is being organized by the IAEA in coop-eration with the National Institute for Fusion Science, Japan. These wave-particle interactions are recognized today as being a most important research topic in space plasma physics. This book provides a full and systematic description of the physical theory of whistler and Alfvén cyclotron masers acting in planetary magnetospheres, and in the Sun's outer atmosphere.

• “Plasma” named by Irving Langmuir in ’s! • The standard definition of a plasma is as the 4th state of matter (solid, liquid, gas, plasma), where the material has become so hot that (at least some) electrons are no longer bound to individual nuclei. Thus a plasma is electrically conducting, and can exhibit collective dynamics.! A hot plasma in one which approaches a state of local thermodynamic equilibrium (LTE). A hot plasma is also called a thermal plasma, but in Russian literature, a “low temperature” plasma in order to distinguish it from a thermonuclear fusion plasma. Such plasmas can be produced by atmospheric arcs, sparks and flames. Warm plasma.

Exploiting the general dispersion relation describing all waves in an ideal ion-electron fluid, we revisit established treatments on wave families in a cold ion-electron plasma. These contain the magnetohydrodynamic Alfvén and fast waves at low frequencies, long wavelengths, but are enriched by short wavelength resonance behaviors, electrostatic and electromagnetic mode types, and cut-off. This means that the extension of an ionized gas must be large compared to the Debye–Hückel length, in order to fulfil the conditions of being quasi -neutrality is defined only on a large macroscopic scale. If we inspect plasma on a microscopic scale, we may find deviations from neutrality increasing with decreasing scale length.


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On supplementary heating of fusion plasmas by means of Alfven waves by J. A. Tataronis Download PDF EPUB FB2

Excerpt from On Supplementary Heating of Fusion Plasmas by Means of Alfven Waves One of the most important problems facing the development of Tokamak fusion plasma experiments is the effective plasma heating over and above that obtainable from Joule heating.

This paper addresses itself to this problem. Low-frequency wave modes of magnetized inhomogeneous plasmas have been subject to intense study in the last decade because they play important roles in the transport of energy in the plasmas.

The "Alfvén wave heating" scheme has been investigated as a supplementary heating scheme for fusion plasma devices, and it has been invoked as a model of.

Low-frequency wave modes of magnetized inhomogeneous plasmas have been subject to intense study in the last decade because they play important roles in the transport of energy in the plasmas.

The "Alfvén wave heating" scheme has been investigated as a supplementary heating scheme for fusion plasma devices, and it has been invoked as a model of the heating of the solar Cited by: Supplementary heating of fusion plasmas by means of Alfven waves.

August The theory of rf energy absorption in inhomogeneous plasmas by means of Alfven waves is presented. A straight. Book. Jan ; B. Kadomtsev Supplementary heating of fusion plasmas by means of Alfven waves.

The theory of rf energy absorption in inhomogeneous plasmas by means of Alfven waves is. Definition. An Alfvén wave in a plasma is a low-frequency (compared to the ion cyclotron frequency) travelling oscillation of the ions and the magnetic ion mass density provides the inertia and the magnetic field line tension provides the restoring force.

The wave propagates in the direction of the magnetic field, although waves exist at oblique incidence and smoothly change into.

On Supplementary Heating of Fusion Plasmas by Means of Alfven Waves, Report CMF (), New York University APPERT, K., et al., 8th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Brussels () HASEGAWA, A., CHEN, L., Phys.

Fluids Jj> () STIX, T.H., Proceedings of the Joint Varenna. Low-frequency wave modes of magnetized inhomogeneous plasmas have been subject to intense study in the last decade because they play important roles in the transport of energy in the plasmas.

The "e;Alfven wave heating"e; scheme has been investigated as a supplementary heating scheme for fusion plasma devices, and it has been invoked as. Heating of tokamak plasmas by Alfvén waves is studied by means of a linearized kinetic model which takes into account electron inertia and Landau damping, finite ion gyroradius, the equilibrium current, and magnetic shear.

In cylindrical geometry, a fourth‐order set of differential equations in r for the perturbed fields E r and E ⊥ is solved numerically for modes driven by a sheet.

The heating of a plasma by magnetosonic waves (compressional Alfven waves) is an idea which germinated in both the US and the USSR in the late 's. In those early days, the goal sought was direct ion heating and the magnetosonic absorption mechanisms considered were the nonlinear effects arising in shock heating and in large-amplitude.

Low-frequency wave modes of magnetized inhomogeneous plasmas have been subject to intense study in the last decade because they play important roles in the transport of energy in the plasmas. The "Alfvén wave heating" scheme has been investigated as a supplementary heating scheme for fusion plasma devices, and it has been invoked as a model of Author: Neil F.

Cramer. Plasma Effects in Metals: Helicon and Alfven Waves by E. Kaner, V. Skobov and a great selection of related books, art and collectibles available now at   KAWs in turbulent space plasmas are thought to account for heating of plasmas at kinetic scales 5,6,7.

In previous stud30, such waves were found to have ≫ k. 1) Use of injected waves for plasma heating and control – plasma production, heating, current drive, flow drive, plasma stabilization, including the basic plasma physics needed for these applications; 2) Plasma generated waves and interaction of energetic particles with waves – Alfven.

This paper discusses the behaviour and consequences of the expected populations of energetic ions in ITER plasmas. It begins with a careful analytic and numerical consideration of the stability of Alfvén Eigenmodes in the ITER 15 MA baseline scenario. The stability threshold is determined by balancing the energetic ion drive against the dominant damping mechanisms and it is found that.

Two families of external heating methods—neutral beam injection and high-frequency electromagnetic waves—will complement ohmic heating to bring the ITER plasma to temperature.

Neutral beam injection consists in shooting high energy particles into the plasma. Outside of the tokamak, charged deuterium particles are accelerated to the required energy level. Alfvén waves: a journey between space and fusion plasmas Liu Chen Plasma Physics and Controlled Fusion 50 IOPscience.

Radial structures and nonlinear excitation of geodesic acoustic modes F. Zonca and L. Chen EPL (Europhysics Letters) 83 IOPscience. Abstract. This review discusses Alvén wave heating in non-uniform plasmas as a possible means for explaining the heating of the solar corona.

It focusses on recent analytical results that enable us to understand the basic physics of Alvén wave heating and help us with the interpretation of results of numerical simulations. Magnetohydrodynamics (MHD; also magneto-fluid dynamics or hydro­magnetics) is the study of the magnetic properties and behaviour of electrically conducting es of such magneto­fluids include plasmas, liquid metals, salt water, and word "magneto­hydro­dynamics" is derived from magneto-meaning magnetic field, hydro-meaning water, and dynamics meaning movement.

This monograph deals with the properties of Alfven waves and with their application to fusion. The book is divided into 7 chapters dealing with linear properties in homogeneous and inhomogeneous plasmas.

Absorption is treated by means of kinetic theory. Instabilities and nonlinear processes are treated in Chapters 1 to 6, and the closing. HF waves are applied increasingly in industry as a standard means of producing plasma and are common for supplementary heating of fusion plasma, and for space plasma wave studies.

The Plasma Research Department will be commissioning a kW, MHz HF transmitter in the New Year for plasma formation and heating in H-1NF.Ono [2] which utilizes waveguide to launch fusion plasmas.

It might be an advantage of the IBW heating to be able to excite waves into fusion plasmas without antennas or coils which might have complex structures, because such complicated structures set near fusion plasma might produce impurity ions, and they might not be sui table for maintenance.both magnetic fusion and space plasmas; including, notably, geomagnetic pulsation theory, nonlinear gyrokinetic theory, Alfvén wave heating and kinetic Alfvén waves, toroidal Alfvén eigenmodes, "fishbone" and energetic particle modes, and excitation of zonal flow in toroidal plasmas.