A Model for the Evolution of the Elemental Abundances of Solar Energetic Particles

Abstract

We present a theoretical model of the coupled evolution of the phase space densities of solar energetic particles (SEP) and interplanetary Alfven wave distribution for interpreting the evolution of elemental abundances in SEP accelerated by a traveling interplanetary shock. The model is formulated in "mixed" coordinates and includes the effects of magnetic focusing, pitch-angle scattering, solar-wind convection, and adiabatic deceleration, as well as wave transport and amplification by streaming protons. The results suggest that a key ingredient for understanding SEP abundance variation is the transport of shock accelerated ions through proton excited non-Kolmogorov wave spectra.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA598476

Entities

People

  • Allan J. Tylka
  • Chee K. Ng
  • D. V. Reames

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Convection
  • Cosmic Rays
  • Information Operations
  • Military Research
  • Particles
  • Personal Information Managers
  • Scattering
  • Solar Wind
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Solar Physics

Technology Areas

  • Space