Results 121 to 130 of about 42,563 (164)

Wave–particle interactions in plasmas

Plasma Physics and Controlled Fusion, 2006
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 illustrated ...
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Linear Wave-Particle Interactions

1998
Abstract Collisionless absorption of h.f. power is a remarkable property of hot plasmas, and it is of great theoretical interest to understand how it occurs. It also has practical importance, since the possibility of selective dissipation and thermalisation of h.f. waves with the appropriate frequency, phase velocity, and polarization is
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Three-Wave Interaction and Nonlinear Wave-Particle Scattering

The Physics of Fluids, 1971
A study has been made of three-wave interaction and nonlinear wave-particle scattering for waves propagating parallel to the external magnetic field using quantum techniques. The three-wave interaction refers to longitudinal, transverse, and Alfvén or whistler modes. The waves taking part in the nonlinear wave-particle scattering are transverse, Alfvén,
S. Krishan, J. Fukai
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Gyroresonant Wave-Particle Interactions

1972
This review will be restricted to gyroresonant interactions. The basic processes of these interactions are discussed in the frame of the quasi-linear theory. Frequencies of interaction, anisotropy of the particle distribution function, and amplification and diffusion coefficients are computed for different types of interaction and different regions of ...
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Computational models for wave-particle interactions

Computer Physics Communications, 1986
Abstract A 2-D finite-element evolution Fokker-Planck code, BACCHUS, is presented. The originally current-drive version and a more recent bounce-averaged version are discussed in some detail. A 1 1 2 - D quasi-linear code, RUNAWAY, is also described, especially to elucidate the major difficulties arising when the wave-particle interaction ...
S. Succi, K. Appert, W. Core, H. Hamnén, T. Hellsten, J. Vaclavik   +5 more
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Drift of Particles and Wave-Particle Interactions

1975
To improve our comprehension of the Earth’s magnetosphere it is necessary to couple the dynamic of the particles and the plasma instabilities (see for example Ashour-Abdalla and Cowley, 1974). We will study here the effect on the ion-cyclotron interaction of the sudden appearance of hot protons on the nightside of the outer zone magnetosphere during ...
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Particle-wave-particle interactions involving whistler-mode waves in the magnetosphere

2011 XXXth URSI General Assembly and Scientific Symposium, 2011
Search for and understanding of mechanisms for particle energization is a key problem in physics of the Earth's radiation belts. A good deal of suggested mechanisms is related to resonant interactions between waves and energetic particle. In the plasmaspheric region of the magnetosphere, the energy density variation of resonant particles is often much ...
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Wave-particle interactions: A source for trapped particles

Radiophysics and Quantum Electronics, 1994
For 20 years it has been assumed that whistler mode waves can only resonate with electrons above a characteristic energy E{sub C} = B{sup 2}/2{mu}{sub 0}N, the magnetic energy per particle. Since this energy is typically greater than 10 keV in the outer radiation belt, it has then been argued that auroral electrons at energies less than 10 keV could ...
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Wave-particle interactions in hot plasmas

AIP Conference Proceedings, 2006
This overview talk focuses on the populations of particles which are transmitted through the nearly perpendicular termination shock from the solar wind to the heliosheath, and how they relax and excite waves in the heliosheath. The transmission process probably involves direct transmission of the very cold solar wind core.
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Wave Particle Interaction — Some Laboratory Observations

1974
Electrostatic waves are both a sign of, and intimately bound up with, significant changes in the particle velocity distribution in natural as well as laboratory plasmas. It has been known from some years of laboratory study that collisionless plasmas exhibit an abundance of electrostatic (k ∥ E) noise, or ‘microinstabilities’, in a very wide variety of
C. A. Nyack, P. J. Christiansen, G. Martelli   +2 more
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