Formation and stability of the self-consistent one-dimensional tail current sheet

Journal Article · Sun Nov 01 00:00:00 EST 1992 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/92JA01550· OSTI ID:6901842

Pritchett, P L; Coroniti, F V ^[1]

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1. California Univ., Los Angeles (United States)

The paper investigates the formation, the structure, and the stability of self-consistent one-dimensional current sheets in which the ions carry most of the current and momentum (the occurrence of which was suggested by observations of Mitchell et al., 1990; and Sergeev et al., 1990). Results of the analysis showed that, for the case of a cold current sheet, the characteristic thickness lamba equals to about (Bz/B0) exp 4/3 c/omega(p0), where Bz is the normal field component, B0 is the asymptotic magnitude of the reversing field, and c/omega(p0)is the collisionless ion skin depth based on lobe density. A two-dimensional self-consistent dynamical simulation model is developed, which demonstrates that these idealized current sheets are unstable to kink perturbations driven by the anisotropic pressure distribution produced by the chaotic nature of the particle orbits in a field-reversal region. 32 refs.

• OSTI ID: 6901842
• Journal Information: Journal of Geophysical Research; (United States), Vol. 97; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH MAGNETOSPHERE
MAGNETOHYDRODYNAMICS
PLASMA SHEET
ONE-DIMENSIONAL CALCULATIONS
GEOMAGNETIC FIELD
IONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETOTAIL
CHARGED PARTICLES
EARTH ATMOSPHERE
FLUID MECHANICS
HYDRODYNAMICS
MAGNETIC FIELDS
MECHANICS
661320* - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)