Chaotic jumps in the generalized first adiabatic invariant in current sheets

Details Chaotic jumps in the generalized first adiabatic invariant in current sheets Chaotic jumps in the generalized first adiabatic invariant in current sheets

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1599b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Aug. 1991, p. 1599-1602.

Physics

7

Adiabatic Equations, Chaos, Current Sheets, Particle Motion, Plasma Dynamics, Distribution Functions, Earth Magnetosphere, Geomagnetic Tail, Plasma Drift

Scientific paper

The present study examines how the changes in the generalized first adiabatic invariant J derived from the separatrix crossing theory can be incorporated into the drift variable approach to generating distribution functions. A method is proposed for determining distribution functions for an ensemble of particles following interaction with the tail current sheet by treating the interaction as a scattering problem characterized by changes in the invariant. Generalized drift velocities are obtained for a 1D tail configuration by using the generalized first invariant. The invariant remained constant except for the discrete changes caused by chaotic scattering as the particles cross the separatrix.

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