Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh51b..04s&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SH51B-04
Physics
7857 Stochastic Phenomena (3235, 3265, 4475), 7859 Transport Processes, 7863 Turbulence (4490)
Scientific paper
In the past years diffusion theories have been used for describing the random walk of magnetic field lines. Recently we have improved the theoretical description of field line wandering. This improved approach uses an ordinary differential equation. By solving this equation for different turbulence models we demonstrate the field line random walk has to be described as a non-diffusive process. In nearly all cases previous diffusion theories can not be applied. Only for very specific parameter regimes field line wandering behaves diffusively. We also show how these new non-diffusive results can be used in cosmic ray scattering theory. By employing a generalized compound transport model we demonstrate how field line wandering and charged particle transport in the direction perpendicular to the mean magnetic field are connected.
Shalchi Andreas
Weinhorst B.
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