Results 171 to 180 of about 37,907 (215)

New resonances in wave–particle interactions

Physics of Plasmas, 2023
One of the most characteristic features of relativistic particle dynamics at cyclotron resonances is the stepwise dependence of energy and momentum on time [V. A. Buts and A. G. Zagorodny, Phys. Plasmas 28(2), 022311 (2021)]. The reason for these steps is the phase synchronization of charged particles and waves. To describe other features, we introduce
V. A. Buts, A. G. Zagorodny
openaire   +1 more source

Relativistic structure of stochastic wave–particle interaction

The Physics of Fluids, 1988
Stochastic interactions of charged particles with electrostatic waves propagating at arbitrary angles to an external magnetic field are studied based on a relativistic canonical Hamiltonian formalism. The present theory, however, is valid also for electromagnetic waves after a slight modification.
Akimoto, K., Karimabadi, H.
openaire   +1 more source

Models of Resonant Wave‐Particle Interactions

Journal of Geophysical Research: Space Physics, 2021
AbstractRadiation belt electrons are strongly affected by resonant interactions with cyclotron‐resonant waves. For broad band, small amplitude waves the interactions are well described by quasi‐linear diffusion in pitch angle and energy, but coherent, large amplitude waves such as strong whistler mode chorus call for a different treatment. The standard
J. M. Albert, A. V. Artemyev, W. Li, L. Gan, Q. Ma   +4 more
openaire   +1 more source

A Modified Fermi Model for Wave-Particle Interactions in Plasmas

Physical Review Letters, 2006
Wave-particle interactions in plasmas are investigated through a nonlinear map that describes elastic collisions between an ensemble of particles and two barriers. The amplitude of the barriers, proportional to the energy of the wave, can increase or decrease due to the sequence of stochastic collisions.
DE MARCO R., CARBONE, Vincenzo, VELTRI, Pierluigi   +2 more
openaire   +3 more sources

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 ...
openaire   +1 more source

ON THE EFFICIENCY OF WAVE-PARTICLE INTERACTION

Problems of Atomic Science and Technology
The efficiency of acceleration of charged particles during cyclotron resonances and acceleration of particles in a vacuum without an external magnetic field are considered. It is shown that the statement formulated in Lawson-Woodward theorem that relativistic particles do not exchange energy with an external electromagnetic wave in a vacuum is not ...
V.A. Buts, A.G. Zagorodny
openaire   +1 more source

Wave-particle interactions in the outer magnetosphere: A review

Space Science Reviews, 1975
The application of wave-particle interactions to magnetospheric phenomenology is so extensive and wide-ranging that to attempt to review it in its entirety would result in the production of a sizeable monographic book. For this reason, I have chosen to restrict the present review to only wave-particle interactions and their implication in outer ...
openaire   +1 more source

The Sideband Instability and Wave-Particle Interaction

Physica Scripta, 1983
The sideband instability of a large amplitude electron plasma wave is studied by the numerical solution of the Vlasov equation. To give the contribution of the wave-particle mechanism exactly the quasilinear equations are solved simultaneously. As a result the wave-particle mechanism is to some extent responsible for the instability of the lower ...
B P Koch, R W Leven
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source