Abstract
The measurement of [O I] λ5577-A airglow intensities in the morning and evening twilights with a Fabry-Perot interferometer has revealed an enhancement with an apparent seasonal variation. The enhancement is found to emanate from the F region of the ionosphere and is well accounted for in terms of the dissociative recombination of O2+ and F region electrons. It is shown that no other mechanism for the excitation of O(¹S) atoms can be expected to give rise to a significant twilight enhancement. In addition, the results of earlier ground-based studies of the twilight green line airglow by other authors are reviewed critically with reference to the present results.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.