Stochastic Ion Heating by a Lower Hybrid Wave: II
| dc.creator | Karney, Charles F. F. | |
| dc.date | 2005-01-07 | |
| dc.date.accessioned | 2026-07-07T05:53:53Z | |
| dc.date.available | 2026-07-07T05:53:53Z | |
| dc.description | The motion of an ion in a coherent lower hybrid wave (characterized by |k_parallel| << |k_perp| and omega >> Omega_i) in a tokamak plasma is studied. For ions satisfying v_perp > omega/k_perp, the Lorentz force law for the ions is reduced to a set of difference equations which give the Larmor radius and phase of an ion on one cyclotron orbit in terms of these quantities a cyclotron period earlier. From these difference equations an earlier result [Phys. Fluids 21, 1584 (1978)] that above a certain wave amplitude the ion motion is stochastic, is readily obtained. The stochasticity threshold is given a simple physical interpretation. In addition, the difference equations are used to derive a diffusion equation governing the heating of the ions above the stochasticity threshold. By including the effects of collisions, the heating rate for the bulk ions is obtained. | |
| dc.description | Plain TeX, 48 pages, 18 figures | |
| dc.identifier | https://arxiv.org/abs/physics/0501034 | |
| dc.identifier | http://arxiv.org/abs/physics/0501034 | |
| dc.identifier | Phys. Fluids 22(11), 2188-2209 (Nov. 1979) | |
| dc.identifier | doi:10.1063/1.862512 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/86795 | |
| dc.subject | Plasma Physics | |
| dc.subject | Chaotic Dynamics | |
| dc.title | Stochastic Ion Heating by a Lower Hybrid Wave: II | |
| dc.type | text |