Electrostatic ion-cyclotron waves in magnetospheric plasmas: non-local aspects. Memorandum report

Technical Report · Fri Oct 14 00:00:00 EDT 1983

OSTI ID:5376057

Ganguli, G; Bakshi, P; Palmadesso, P

The importance of the effect of the magnetic shear and the finite size of current channel on the electrostatic ion-cyclotron instability for the space plasmas is illustrated. A non-local treatment is used. When the channel width Lc, is larger than the shear length Ls, there is a large reduction in the growth rate along with a noteworthy reduction of the band of the unstable perpendicular wavelengths. For Lc < or = Ls/10 the growth rate is not much altered from its local value, however for Lc/pi i < or = 10 to the second power the growth rate starts falling below the local value and vanishes for Lc pi i. The non-local effects lead to enhanced coherence in the ion cyclotron waves.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 5376057
• Report Number(s): AD-A-133975/3; NRL-MR-5197
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETOSPHERE
PLASMA INSTABILITY
CYCLOTRON INSTABILITY
ELECTROSTATICS
ION BEAMS
MAGNETOHYDRODYNAMICS
PLASMA WAVES
STABILITY
BEAMS
EARTH ATMOSPHERE
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MECHANICS
PLASMA MICROINSTABILITIES
640203* - Atmospheric Physics- Magnetospheric Phenomena- (-1987)