Cosmic-ray pitch-angle scattering in isotropic turbulence

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166851· OSTI ID:6392423

Bieber, J W; Smith, C W; Matthaeus, W H

A dissipation range is incorporated in the turbulence model to reconcile the divergent conclusions from studies of cosmic-ray pitch-angle scattering in isotropic magnetic turbulence. The Fokker-Planck coefficient for pitch-angle scattering is calculated. It is shown that the slab form of the Fokker-Plank coefficient (Jokipii, 1966) is valid at very low energies, while the nonslab form (Fisk, 1974) is valid at intermediate energies. 22 references.

• Research Organization: Delaware Univ., Newark (USA)
• OSTI ID: 6392423
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIATION
DIFFERENTIAL EQUATIONS
ENERGY SPECTRA
EQUATIONS
FLUID MECHANICS
FOKKER-PLANCK EQUATION
HYDRODYNAMICS
IONIZING RADIATIONS
ISOTROPY
LARMOR RADIUS
MAGNETOHYDRODYNAMICS
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
RADIATIONS
SCATTERING
SPECTRA
TURBULENCE