REGIMES OF CONTRADICTION IN THE STUDY OF STRONG DIFFUSION

Authors
Citation
Dp. Singh, REGIMES OF CONTRADICTION IN THE STUDY OF STRONG DIFFUSION, Earth, moon, and planets, 66(2), 1994, pp. 239-248
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Astronomy & Astrophysics","Geosciences, Interdisciplinary
Journal title
ISSN journal
0167-9295
Volume
66
Issue
2
Year of publication
1994
Pages
239 - 248
Database
ISI
SICI code
0167-9295(1994)66:2<239:ROCITS>2.0.ZU;2-8
Abstract
Various aspects of Etcheto et al.'s theory are studied in detail. It i s shown that the inequality a < b < c fails at low L shells. A compara tive study of wave spectral densities generated during weak/strong dif fusion events suggests that this theory is strictly not applicable at low L shells. It is found that different criterea for measuring the di ffusion of energetic electrons by ELF waves (100-3000 Hz) contradict e ach other. If one region is strong diffusion region for one criteria, it may be a weak diffusion region according to another criteria. It is found that whereas critical wave intensities (1-2 pT(2)/Hz) can cause strong diffusion of energetic electrons, if one applies Fokker-Planck 's diffusion approach, very large wave intensities are needed for stro ng diffusion if we apply Etcheto et al.'s approach.