Energetic particles' parallel diffusion, a nonlinear theory to extend NLGC

Details Energetic particles' parallel diffusion, a nonlinear theory to extend NLGC Energetic particles' parallel diffusion, a nonlinear theory to extend NLGC

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh13a0400q&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH13A-0400

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7514 Energetic Particles (2114), 7807 Charged Particle Motion And Acceleration, 7859 Transport Processes, 7863 Turbulence (4490)

Scientific paper

Nonlinear guiding center theory (NLGC, Matthaeuss et al. 2003) is considered the first theory to be able to describe energetic particles' perpendicular diffusion in good agreement with numerical simulations. In this paper we present a nonlinear theory of parallel diffusion of charged particles with perpendicular scattering and dynamical turbulence. The extended nonlinear guiding center theory (NLGC-E) is obtained by combining the new parallel diffusion theory and the NLGC. The NLGC-E shows good agreement with numerical simulations for both parallel and perpendicular diffusion using typical parameters in solar wind. Furthermore, the NLGC-E has a simpler mathematical form and is more computationally tractable than the weakly nonlinear theory (WNLT, Shalchi et al. 2004).

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