A quasi-linear kinetic equation for cosmic rays in the interplanetary medium
Journal Article
·
· J. Geophys. Res.; (United States)
A kinetic equation for interplanetary cosmic rays is set up with the aid of weak plasma turbulence theory for an idealized radially symmetric model of the interplanetary magnetic field. As a starting point this treatment invokes the Vlasov equation instead of the traditional Fokker-Planck equation. Quasi-linear theory is applied to obtain a momentum diffusion equation for the heliocentric frame of reference which describes the interaction of cosmic rays with convecting magnetic irregularities in the solar wind plasma. Under restricted conditions the well-known equation of solar modulation can be obtained from this kinetic equation. (AIP)
- Research Organization:
- Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
- OSTI ID:
- 7270200
- Journal Information:
- J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 81:13; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOLTZMANN-VLASOV EQUATION
COSMIC RADIATION
COSMIC RAY PROPAGATION
DIFFERENTIAL EQUATIONS
DIFFUSION
EQUATIONS
INTERPLANETARY MAGNETIC FIELDS
IONIZING RADIATIONS
MAGNETIC FIELDS
MATHEMATICAL MODELS
RADIATIONS
SOLAR ACTIVITY
SOLAR RADIATION
SOLAR WIND
TURBULENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOLTZMANN-VLASOV EQUATION
COSMIC RADIATION
COSMIC RAY PROPAGATION
DIFFERENTIAL EQUATIONS
DIFFUSION
EQUATIONS
INTERPLANETARY MAGNETIC FIELDS
IONIZING RADIATIONS
MAGNETIC FIELDS
MATHEMATICAL MODELS
RADIATIONS
SOLAR ACTIVITY
SOLAR RADIATION
SOLAR WIND
TURBULENCE