Zero-frequency ion ring instability

Journal Article · Sat Jun 01 04:00:00 EDT 1985 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864966· OSTI ID:5692888

Gary, S P; Pongratz, M B; Madland, C D; Swift, D W

The electrostatic zero-frequency ion ring instability with wave vector perpendicular to a uniform magnetic field B is examined through linear and second-order theory as well as by computer simulation. In the simulation ions are taken as magnetized particles; the electrons are described as a massless fluid subject to E x B motion. Saturation of the instability is primarily due to broadening of the ion ring distribution. A second-order theory provides an approximate criterion for the saturation amplitude, as does a simple trapping argument. Thus, for the simulation presented here, both quasilinear and trapping effects contribute to saturation.

• Research Organization: Earth and Space Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5692888
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 28:6; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
CHARGED PARTICLES
COMPUTERIZED SIMULATION
ELECTRON GAS
ELEMENTARY PARTICLES
FLUIDS
GASES
INSTABILITY
ION RINGS
IONS
MAGNETIC FIELDS
MASSLESS PARTICLES
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SATURATION
SIMULATION
TRAPPING