Motion of charged particles normal to an irregular magnetic field

Details Motion of charged particles normal to an irregular magnetic field Motion of charged particles normal to an irregular magnetic field

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...198..727j&link_type=abstract

Astrophysical Journal, vol. 198, June 15, 1975, pt. 1, p. 727-732. Research supported by the Alfred P. Sloan Foundation;

Astronomy and Astrophysics

Astrophysics

4

Charged Particles, Cosmic Rays, Magnetic Variations, Particle Motion, Angular Distribution, Drift Rate, Magnetic Field Configurations, Magnetohydrodynamics, Perturbation Theory

Scientific paper

The motion is analyzed of charged particles in a fluctuating magnetic field which varies only in directions normal to its mean direction, such as that which would be generated by an ensemble of magnetosonic waves propagating normal to an ambient magnetic field. The appropriate generalization of gradient-drift motion is derived in terms of the power spectrum of the magnetic fluctuations, and an effective spatial diffusion coefficient is obtained. Several special cases are considered, including a Gaussian power spectrum, a power-law spectrum with a cutoff, and a general power-law spectrum. A possible magnitude is calculated for the spatial diffusion coefficient of the solar wind.

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