Cyclotron absorption of ion-cyclotron waves at the bi-ion frequency

Thorne, R.M.; Horne, R.B. ORCID: 1993 Cyclotron absorption of ion-cyclotron waves at the bi-ion frequency. Geophysical Research Letters, 20 (4). 317-320.

Full text not available from this repository. (Request a copy)


We demonstrate that geomagnetically trapped ion-cyclotron waves that are generated near the equator with frequencies below ΩHe+, can experience significant O+ cyclotron resonant absorption near the reflection point at frequencies just above the bi-ion frequency. The absorption is strongest when the wave normal angle is highly oblique and when the heavy ions are relatively hot (T > 1 keV) with a concentration of no more than 1 or 2%. This suggests that wave absorption near the bi-ion frequency could contribute to the heating process for energetic ring current O+; in the outer radiation zone during geomagnetic storms.

Item Type: Publication - Article
Digital Object Identifier (DOI):
ISSN: 00948276
Date made live: 19 Oct 2017 08:17 +0 (UTC)

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...