Fluctuations associated with sheared velocity regions near auroral arcs

Journal Article · Sun May 01 04:00:00 EDT 1988 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL015i005p00417· OSTI ID:7128791

Basu, B; Coppi, B

The theory of electrostatic, collisional plasma modes that are driven unstable by a sheared field-aligned ion flow velocity (i.e., V/sub i//sub o/ = V/sub o/(x)e/sub z/,B/sub o/ = B/sub o/e/sub z/) is presented. The threshold condition for the instability is V/sub o/'..nu../sub i//sub n/>2(1+T/sub i/T/sub e/) and the unstable modes are characterized by k/sub parallel/<>lambda/sub m/ and 2..pi..rho/sub i/

• Research Organization: Air Force Geophysics Laboratory, Hanscom Air Force Base, Massachusetts
• OSTI ID: 7128791
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 15:5; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
&amp; Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAE
CHARGED PARTICLES
EARTH ATMOSPHERE
ELECTRIC FIELDS
F REGION
FLUCTUATIONS
HELMHOLTZ INSTABILITY
INSTABILITY
IONOSPHERE
IONS
LARMOR RADIUS
MAGNETIC FIELDS
PLANETARY IONOSPHERES
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
VARIATIONS
VELOCITY