Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (25) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Pitch Angle Diffusion Coefficient in an Extended Quasi-linear Theory
Authors:
Ng, C. K.; Reames, D. V.
Publication:
Astrophysical Journal v.453, p.890 (ApJ Homepage)
Publication Date:
11/1995
Origin:
APJ; KNUDSEN
Astronomy Keywords:
ACCELERATION OF PARTICLES, DIFFUSION, INTERPLANETARY MEDIUM, MAGNETOHYDRODYNAMICS: MHD, SUN: PARTICLE EMISSION
DOI:
10.1086/176449
Bibliographic Code:
1995ApJ...453..890N

Abstract

Using an extended quasi-linear theory that takes account of the distribution of medium-scale background interplanetary magnetic field, we calculate the pitch angle diffusion coefficients of interplanetary energetic ions, for a slab turbulence model consisting of a superposition of parallel and antiparallel transverse R and L waves. Our results show that the background variation broadens the resonance function significantly at pitch angles near 90°, so that protons down to ≈ 25 keV interact with hydromagnetic waves at all pitch angles, and the steepening of the magnetic field power spectrum in the dissipation range does not result in a resonance gap or infinite scattering mean free path.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints