Accession Number:

AD0736432

Title:

Strong Pitch-Angle Scattering of Energetic Electrons in the Presence of Electrostatic Waves above the Ionospheric Trough Region.

Descriptive Note:

Rept. for Jan-Jun 71,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Report Date:

1971-11-01

Pagination or Media Count:

19.0

Abstract:

Simultaneous measurements of energetic electrons and electrostatic waves in the midlatitude trough region indicate that events characterized by strong pitch-angle diffusion in the altitude range 2000 to 4500 km occur in the presence of ELF electrostatic waves. These waves are attributed to a current-driven ion cyclotron instability. Scattering by electrostatic waves is sufficient to account for the strong pitch-angle scattering commonly observed by low-altitude satellites and for the hsarply defined feature previously referred to as the 3outer trapping boundary.3 Author

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE