Charged particle propagation in strong disordered magnetic fields

Details Charged particle propagation in strong disordered magnetic fields Charged particle propagation in strong disordered magnetic fields

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....3..856j&link_type=abstract

In: International Cosmic Ray Conference, 14th, Munich, West Germany, August 15-29, 1975, Conference Papers. Volume 3. (A76-26851

Physics

Charged Particles, Magnetic Fields, Particle Trajectories, Turbulent Diffusion, Cosmic Rays, Error Analysis, Magnetic Effects, Nonlinearity, Particle Motion, Random Processes

Scientific paper

The use of quasilinear theory in calculating particle trajectories in strong random fields is beset by a basic difficulty concerning the breakdown of the basic assumption of the theory. This assumption is that the random force acting on the particle becomes self-incoherent before it has changed the particle's trajectory in phase space, ie., its position or velocity, by a significant amount. The various time scales involved in this problem are defined and compared to determine in which regions the basic assumptions of quasilinear theory are violated. It is shown how nonlinear theories in general and the Partially Averaged Field theory (Jones et al. 1973) can partly alleviate these difficulties.

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