Comments on the interpretation of 3371 A filter-photometer observations and its implications for the AE-E photoelectron fluxes

Details Comments on the interpretation of 3371 A filter-photometer observations and its implications for the AE-E photoelectron fluxes Comments on the interpretation of 3371 A filter-photometer observations and its implications for the AE-E photoelectron fluxes

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31.1223c&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 31, Oct. 1983, p. 1223-1228.

Physics

Atomic Physics

22

Dayglow, Flux (Rate), Photoelectrons, Photometers, Rocket-Borne Instruments, Thermosphere, Atomic Collisions, Explorer 51 Satellite, Quenching (Atomic Physics)

Scientific paper

Recent rocket-borne measurements of the dayglow emission at 3371 A are analyzed with respect to the probable species responsible for the emission, and implications of this composition for photoelectron fluxes measured by the AE satellites are noted. Examination of a synthetic spectrum of the rocket-borne filter-photometer in the 3371 A region shows the photometer to be about equally good in the detection of the second positive group (2PG) (0,0) volume emission of N2, which is used for monitoring photoelectron flux in the thermosphere, and the Vegard-Kaplan (VK) (0,9) band. Rocket observations show 20 to 30 percent of the photometer signal at 200 km to be due to the VK (0,9) emission, in agreement with theoretical predictions. It is suggested that AE-C Visible Airflow Experiment results would conform to the photoelectron theory of Victor if the contribution of the VK (0,9) band is included. On the other hand, the presence of VK emission would cause 2 PG emission rates predicted from photoelectron fluxes measured on AE-E to overestimate the airglow observations by 70-85 percent.

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