Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm42a..13a&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SM42A-13
Physics
2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2753 Numerical Modeling
Scientific paper
Particle transport in the inner magnetosphere during quiet or moderately disturbed conditions is often described by diffusion of the adiabatic invariants of single particle motion. This is the approach used by the code Salammbo. Here, progress is presented on a renewed effort along similiar lines, the Dynamic Energetic Radiation Tracker [D(I,L,B) ERT or DILBERT]. A major goal is to generalize to realistic magnetic field models, rather than a dipole. When wave-particle interactions are dominant, numerical stability has proved unexpectedly demanding, due to the rapidly changing diffusion coefficients. This is aggravated by the use of adiabatic invariants instead of energy and pitch angle as independent variables, although it can be masked by large radial diffusion. Details, examples, and possible fixes will be presented.
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