Energetic Particle Transport in Strong Compressive Wave Turbulence Near Shocks
- Institute of Geophysics and Planetary Physics, University of California, Riverside (United States)
Strong interplanetary coronal mass ejection driven shocks are often accompanied by high levels of low frequency compressive wave turbulence. This might require a non-linear kinetic theory approach to properly describe energetic particle transport in their vicinity. We present a non-linear diffusive kinetic theory for suprathermal particle transport and stochastic acceleration along the background magnetic field in strong compressive dynamic wave turbulence to which small-scale Alfven waves are coupled. Our theory shows that the standard cosmic-ray transport equation must be revised for low suprathermal particle energies to accommodate fundamental changes in spatial diffusion (standard diffusion becomes turbulent diffusion) as well as modifications to particle convection, and adiabatic energy changes. In addition, a momentum diffusion term, which generates accelerated suprathermal particle spectra with a hard power law, must be added. Such effective first stage acceleration possibly leads to efficient injection of particles into second stage diffusive shock acceleration as described by standard theory.
- OSTI ID:
- 20719181
- Journal Information:
- AIP Conference Proceedings, Vol. 781, Issue 1; Conference: 4. annual IGPP international astrophysics conference, Palm Springs, CA (United States), 26 Feb - 3 Mar 2005; Other Information: DOI: 10.1063/1.2032695; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
ENERGETIC CHARGED PARTICLES ASSOCIATED WITH STRONG INTERPLANETARY SHOCKS
RADIAL DEPENDENCE OF PEAK PROTON AND IRON ION FLUXES IN SOLAR ENERGETIC PARTICLE EVENTS: APPLICATION OF THE PATH CODE