Monte Carlo calculations of relativistic solar proton propagation in interplanetary space

Details Monte Carlo calculations of relativistic solar proton propagation in interplanetary space Monte Carlo calculations of relativistic solar proton propagation in interplanetary space

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....4..364l&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 4 p 364-367 (SEE N85-34729 23-92)

Physics

Interplanetary Space, Monte Carlo Method, Relativistic Plasmas, Solar Protons, Anisotropy, Decay Rates, Interplanetary Magnetic Fields, Mean Free Path, Particle Flux Density, Particle Trajectories, Pitch (Inclination), Proton Scattering

Scientific paper

Particle fluxes and pitch angle distributions of relativistic solar protons at 1 AU were determined by Monte Carlo calculations. The analysis covers two hours after the release of the particles from the Sun and total of eight 100000 particle trajectories were simulated. The pitch angle scattering was assumed to be isotropic ad the scattering mean free path was varied from 0.1 to 4 AU. As an application, the solar injection time and interplanetary scattering mean free path of particles that gave rise to the GLE on May, 1978 were determined. Assuming exponential form, the injection decay time was found to be about 11 minutes. The m.f.p. of pitch angle scattering during the event was about 1 AU.

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