Low-amplitude, wave-induced particle energy diffusion in an inhomogeneous magnetic field
- 1 January 1984
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 27 (1) , 184-191
- https://doi.org/10.1063/1.864508
Abstract
The motion of a charged particle in a static, homogeneous magnetic field and a coherent electrostatic wave, whose frequency is much greater than the particle gyrofrequency, has been studied in detail by Karney. Karney found that there is a threshold in wave amplitude above which widespread diffusion of the particle energy (i.e., heating) occurs and below which the particle energy remains bounded. In this paper the effect of an inhomogeneous (or time‐varying) magnetic field is examined. It is found that under general circumstances the motion of the particle can become diffusive and unbounded for values of the wave amplitude well below the threshold in the constant magnetic field case. The dependence of this diffusion on the various parameters affecting the motion is examined.Keywords
This publication has 8 references indexed in Scilit:
- Scattering of lower-hybrid waves by drift-wave density fluctuations: Solutions of the radiative transfer equationPhysics of Fluids, 1983
- Quasi-linear theory calculation of ion tails and neutron rates during lower hybrid heating in Alcator-ANuclear Fusion, 1983
- Toroidal and scattering effects on lower-hybrid wave propagationPhysics of Fluids, 1982
- Diffusion coefficient for ions in the presence of a coherent lower hybrid wavePhysics of Fluids, 1981
- Stochastic ion heating by a lower hybrid wave: IIPhysics of Fluids, 1979
- Lower hybrid wave scattering by density fluctuationsPhysics of Fluids, 1979
- Stochastic ion heating by a lower hybrid wavePhysics of Fluids, 1978
- Stochastic Acceleration by an Electrostatic Wave near Ion Cyclotron HarmonicsPhysical Review Letters, 1977