On the Onset of HF-Induced Airglow at HAARP
Abstract
Observations of airglow at 630 nm (red line) and 557.7 nm (green line) during the February 2002 campaign at the High Frequency Active Auroral Research Program (HAARP) heating facility are analyzed. We find that during injections toward magnetic zenith (MZ) the green and red lines gain ^5 R within ^1 s and ^20 R within ^10 s, respectively. We term this period the onset of the HF-induced airglow. A model of the onset at magnetic zenith is developed. It accounts for background photoelectrons and dissociative recombination of O(+)2. It is shown that heating and acceleration of background electrons dominate the airglow onset. We propose a scenario for the generation of strong Langmuir turbulence for injections outside the Spitze region, including magnetic zenith.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 13, 2004
- Accession Number
- ADA434533
Entities
People
- E. V. Mishin
- T. Pedersen
- W. J. Burke
Organizations
- Boston College