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Wednesday, April 22, 2020 | History

3 edition of Wave/particle interactions in the plasma sheet found in the catalog.

Wave/particle interactions in the plasma sheet

Wave/particle interactions in the plasma sheet

  • 108 Want to read
  • 23 Currently reading

Published by University of Colorado, Boulder in Boulder, Colo .
Written in English

    Subjects:
  • Boundary layer plasmas.,
  • Particle interactions.,
  • Plasma sheaths.,
  • Wave interaction.

  • Edition Notes

    StatementP.B. Dusenberry.
    Series[NASA contractor report] -- NASA-CR-171537., NASA contractor report -- NASA CR-171537.
    ContributionsUniversity of Colorado, Boulder., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL16117567M

    The book includes extensive discussion of the Sun and solar wind, the magnetized and unmagnetized planets, and the fundamental processes of space plasmas including shocks, plasma waves, ULF waves, wave particle interactions, and auroral processes. The text devotes particular attention to space plasma observations and integrates these with. Show only items where. Investigations of a sheet model for a bounded plasma with magnetic field and radiation: J. M. Dawson: Kruer, William L. Some investigations of wave- particle interactions: J. M. Dawson: Winsor, Niels K. A numerical model for low- pressure plasma in a toroidal magnetic field: J. L. Johnson: Politzer, Peter A.


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Wave/particle interactions in the plasma sheet Download PDF EPUB FB2

Suggested Citation:"Wave-Particle Interactions and Plasma Heating."National Research Council. Plasma Science: From Fundamental Research to Technological gton, DC: The National Academies Press. doi: / Get this from a library. Wave/particle interactions in the plasma sheet. [P B Dusenberry; University of Colorado Boulder.; United States.

National Aeronautics and Space Administration.]. Wave plasma interactions represent an ideal area for mutually beneficial collaborations between the inertial and magnetic fusion communities.

The non-linear behavior of intense electromagnetic waves, the saturation mechanisms for unstable plasma waves, linear and non-linear wave-particle interactions, and relativistic plasma phenomena are clearlyFile Size: 71KB.

The most important outstanding issue is quantifying particle precipitation that is caused by wave-particle interactions with various plasma waves in the magnetosphere. Observations from ISR can be examined on a statistical or a case-by-case basis to constrain theoretical estimates for the magnitude of fluxes that are scattered into the loss cone.

Part of this is developing new kinetic theories that account for wave-particle interactions (e.g., see [W1,W4]), and part is solving these kinetic (microscopic) theories to determine how the waves influence macroscopic behaviors.

New types of plasma instabilities are still being discovered, and we have contributed to this area as well. Plasma populations throughout the universe interact with solid bodies, gases, magnetic fields, electromagnetic radiation, magnetohydrodynamic waves, shock waves, and other plasma populations.

These interactions can occur locally as well as on very large scales between objects such as galaxies, stars. The experimental evidence, simulations, and theories of these processes are discussed. {\bf Key words:} the radiation belts, wave-particle interaction, plasma waves and instabilities Discover the.

Note: Magnetospheric studies of the interactions between plasma waves and particles have generally been performed using Gaussian units. To allow the material presented here to be conveniently used in conjunction with other published material Wave/particle interactions in the plasma sheet book magnetospheric wave-particle interactions, we have not converted equations from the literature into Cited by: 3.

Abstract. The physical concepts of wave-particle interactions in a collisionless plasma are developed from first principles. Using the Lorentz force, starting with the concepts of particle gyromotion, particle mirroring and the loss cone, normal and anomalous cyclotron resonant interactions, pitch angle scattering, and cross-field diffusion are developed.

Fredricks R.W. () Wave-Particle Interactions in the Outer Magnetosphere: A Review. In: Formisano V. (eds) The Magnetospheres of the Earth and Jupiter.

Astrophysics and Space Science Library (A Series of Books on the Recent Developments of Space Science and of General Geophysics and Astrophysics Published in Connection with the Journal Space Cited by: In this review, we discussed the role of wave-particle interactions in driving loss of radiation belt electrons, with an emphasis on observational signatures of this process.

These include direct measurements of precipitation, wave properties, and variations in the trapped electron population as a result of cyclotron : Lauren W. Blum, Aaron W. Breneman. Geospace features highly dynamic populations of charged particles with a wide range of energies from thermal to ultra-relativistic.

Influenced by magnetic and electric fields in the terrestrial magnetosphere driven by solar wind forcing, changes in the numbers and energies of these particles lead to a variety of space weather phenomena, some of which are detrimental to.

PDF | On Jan 1,Clare E. Watt and others published Wave-Particle Interactions and Anomalous Resistivity in Collisionless Space Plasmas |. Introduction to Space Physics provides a broad, yet selective, treatment of the complex interactions of the ionized gases of the solar terrestrial environment.

The book includes extensive discussion of the Sun and solar wind, the magnetized and unmagnetized planets, and the fundamental processes of space plasmas including shocks, plasma waves 5/5(3). The two-stream instability is a very common instability in plasma physics. It can be induced by an energetic particle stream injected in a plasma, or setting a current along the plasma so different species (ions and electrons) can have different drift energy from the particles can lead to plasma wave excitation.

Two-stream instability can arise from the case of two cold. @article{osti_, title = {Wave-particle interactions in nonstationary plasma}, author = {Schmit, Paul Frederic}, abstractNote = {Waves have proven to be an immensely useful tool for manipulating magnetically confined fusion plasmas.

Our sophisticated understanding of the physics of waves and their interactions with charged particles in such plasmas is aided by the. Wave-particle interactions play crucial roles in many phenomena occurring in the laboratory [Gill, ] and in space plasmas [Gary, ].

In laboratory plasmas, wave-particle interactions come into play in several im- portant applications, including beat wave acceleration, plasma heating by radio waves at ion and electron cy-Cited by: 1 Wave particle-interactions • Particle trapping in waves • Exact nonlinear waves • Quasilinear theory • Diffusion equation • Plateau formation • Pitch-angle diffusion • Anomalous resistivity • Particle acceleration and heating Nonlinear phenomena • However, plasma physics is fundamentally nonlinear.

• Yet, no general mathematical algorithms exist in nonlinear theory. An overview of the interactions between waves and particles in plasmas is given. Interest is focused on cases where special particle populations, like energetic particle tails, interact with waves.

The two basic, but inter-related, mechanisms through which waves and particles can exchange energy, resonance and stochastization are briefly. @article{osti_, title = {Development of static and dynamic models of the Earth's radiation-belt environment through the study of plasma waves, wave-particle interactions and plasma-number-densities from in-situ observations in the Earth's magnetosphere with the CRRES SPACERAD instruments.

Scientific report No. 1, 22 Sep Apr 91}, author = {Anderson. It is possible that wave-particle interactions may be ultimately responsible for the fluid-like character of the solar wind interaction with planetary ionospheres and the generation of plasma and magnetic vortical structures as those reported by Pope et Author: H.

Pérez-de-Tejada, Rickard Lundin, D. Intriligator. WAVE–PARTICLE interactions have been recognised as the likely key to processes which control the dynamics of the Earth's magnetosphere and trigger auroral precipitation1. The GEOS 1 and GEOS 2 satellites carry wave and particle measuring instruments which permit a full exploration of interactions occurring in the equatorial magnetosphere out to a distance of 7 RE Cited by: • Importance of wave-particle interactions • The Zoo of waves in a magnetised plasma • Dispersion relation for a cold plasma • Dispersion relation for a hot plasma – Landau resonance – Doppler shifted cyclotron resonance • Concepts of quasi-linear diffusion • Acceleration and loss • Application to the Earth’s radiation belts.

The Response of the Magnetosphere to the Solar Wind.- Substorm Effects on the Neutral Sheet Inside 10 Earth Radii.- The Plasma Sheet Boundary and Kp.- The Aurora.- Wave Particle Interactions in the Outer Magnetosphere: A Review.- Drift of Particles and Wave-Particle Interactions.- Hot-Cold Plasma Interactions in the Earth’s Magnetosphere ity theory which reveals that surprisingly strong interactions between waves and particles can lead to either wave damping or wave instability depending on the shape of the velocity distribution of the particles.

Chapter 6 describes cold plasma waves in a background mag. This is what the book aims to teach.\/span>\"@ en\/a> ; \u00A0\u00A0\u00A0\n schema:description\/a> \" 1 Particles and Fields: Exact Self-Consistent Description -- 2 A Statistical Description of Cosmic Plasma -- 3 Propagation of Accelerated Particles in Cosmic Plasma -- 4 The Motion of a Particle in Given Fields -- 5 Wave-Particle Interactions.

Fundamentals of Plasma Physics. This book explains the following topics: Derivation of fluid equations, Motion of a single plasma particle, Elementary plasma waves, Streaming instabilities and the Landau problem, Cold plasma waves in a magnetized plasma, Waves in inhomogeneous plasmas and wave energy relations, Vlasov theory of warm electrostatic waves in a.

Solar system plasma physics is a classic example of the scientific process at work and has benefited from the rapid technological exploration of our near space environment over the last 35 years.

This book is a snapshot of the scientific process in solar system plasma physics. frequencies and wave-particle interactions in trapped pure ion plasma columns, in the small- and large-amplitude regimes. The ion plasma EAWs are directly analogous to EAWs in neutral plasmas or pure elec-tron plasmas, since only one species participates in the wave.

The measurements verify the dispersion relation. The outer belt flux enhancements occur in association with high-speed coronal hole streams. We show that the southward interplanetary magnetic field (IMF) within a coronal hole stream controls the flux enhancement of the relativistic electrons.

Moreover, the amplitudes of the southward IMF of Alfvénic fluctuations in a coronal hole stream are controlled by the Russell–McPherron. Abstract The present conference discusses anomalous resistivity in the geotail neutral sheet, energetic photoelectrons and the polar rain, particle acceleration by EM ion cyclotron turbulence, ion loss from the ring current and plasmaspheric heating, particle acceleration by intense auroral VLF turbulence, chaos in wave-particle interactions, the heating of ion conics in the cusp/cleft.

•The consequences of wave-particle interactions in collisionless plasmas like particle transport and scattering, are well described by the Vlasov () equation, despite of Landau’s criticism. • Currently numerical simulations have shown: • Quasilinear theory is okay for weak 1D waves • But the ql theory must be replaced in cases of.

P.B Dusenberry has written: 'Wave/particle interactions in the plasma sheet' -- subject(s): Particle interactions, Boundary layer plasmas, Wave interaction, Plasma sheaths Asked in. Magnetospheric Particles and Fields Proceedings of the Summer Advanced Study School, Held in Graz, Austria, August 4–15, Editors: McCormac, Billy (Ed.) Free Preview.

There is a large variety of wave-particle interactions. They may occur in connection with linear plasma instabilities, leading to wave growth and damping, or take place in coherent or turbulent wave fields, leading to particle acceleration and heating.

Summary •Plasma is a quasi-neutral ionized gas moving under the influence of EM-fields. frequencies and wave-particle interactions in trapped pure ion plasma columns, in the small- and large-amplitude regimes. The ion plasma EAWs are directly analogous to EAWs in neutral plasmas or pure electron plasmas, since only one species participates in the wave.

The measure-ments verify the dispersion relation predicted for small. The GEOS 1 and 2 spacecraft contain a set of particle and wave detectors which allow for a very comprehensive study of wave‐particle interactions occurring within the equatorial region of the magnetosphere.

details of wave-particle interactions at an unprecedented single particle level. This paper attempts to review some of the contributions and extensions of dust acoustic wave physics, as well as identify recent findings that illustrate the potential importance of this dust wave in the agglomeration of dust particles.

Introduction. Phase resolved optical emission spectroscopy, with high temporal resolution, shows that wave-particle interactions play a fundamental role in sustaining capacitively coupled rf plasmas.

The measurements are in excellent agreement with a simple particle-in-cell simulation. Excitation and ionization mechanisms are dominated by beam-like electrons, energized Cited by: This book has the objective to provide a description of the basic quantitative aspects of magnetospheric physics.

Questions of charged-particle motion in magnetic and electric fields are examined, and the trapping region and currents due to trapped particles are discussed. Electric fields are considered along with wave-particle : L. Lyons, D.

Williams. Today, we are in a position to take on new challenges to resolve the long-standing mysteries of the radiation belts.

The recent discovery of very large-amplitude whistler waves in the magnetosphere raises questions about the validity of the quasi-linear treatment of wave-particle interactions in the radiation belts/5(20).tion belts fluxes.

To model wave–particle interactions, with a numerical code known as WAPI (wave–particle interaction, Boscher et al., ) for example, several input parameters must be properly defined including the characteristics of the waves (intensity, propagation angle) and that of the ambient plasma (electron density).locations of a sharp enhancement of background plasma density.

It is generally accepted that energetic electron precipitation which is correlated with strong ELF-VLF emissions is due to cyclotron wave-particle interactions inside the plasmapause or detached plasma regions with enhanced cold plasma density (Bespalov and Trakhten-gerts, ).