On the interplanetary transport of solar cosmic rays

Journal Article · Fri Apr 01 04:00:00 EST 1988 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA093iA04p02725· OSTI ID:6096387

Schlickeiser, R ^[1]

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1. National Center for Atmospheric Research, Boulder, CO (United States)

The discrepancy between the observed particle's mean free path against scattering {lambda}{sub fit} as derived from applying time-dependent spatial diffusion models to solar particle events and the theoretical value {lambda}{sub t} from quasi-linear theory can be resolved. A more complete quasi-linear result for the pitch-angle diffusion coefficient of particles in a uniform magnetic field with superposed parallel and antiparallel propagating transverse Alfven waves yields finite and well-behaved expressions for the mean free path {lambda}{sub t} even for rather large values of the spectral index q of the assumed power law spectrum of the power spectrum of magnetic irregularities. It is shown that values of q between 2.1 and 2.2 lead to remarkable good agreement of {lambda}{sub t} with the observed variation of {lambda}{sub fit} from solar cosmic ray events.

• OSTI ID: 6096387
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 93:A4; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

660000* -- Physics-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALFVEN WAVES
DIFFUSION
HYDROMAGNETIC WAVES
INTERPLANETARY SPACE
MEAN FREE PATH
QUASILINEAR PROBLEMS
RADIATION TRANSPORT
RADIATIONS
SCATTERING
SOLAR PARTICLES
SOLAR RADIATION
SPACE
STELLAR RADIATION
TIME DEPENDENCE