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dc.contributor.advisor O'Brien, B. J.
dc.creatorBennett, Bob, 1984-
dc.date.accessioned 2016-04-22T21:59:44Z
dc.date.available 2016-04-22T21:59:44Z
dc.date.issued 1968
dc.identifier.citation Bennett, Bob, 1984-. "Twilight enhancement of 6300 A (OI) airglow." (1968) Master’s Thesis, Rice University. https://hdl.handle.net/1911/90099.
dc.identifier.urihttps://hdl.handle.net/1911/90099
dc.description.abstract From consideration of the excitation mechanisms of 6300 A (01) airglow, it is found that an observed twilight enhancement in the- 6300 A (01) intensity may be attributed to a photoelectron flux from the sunlit magnetic conjugate point. This is supported by the coincidence of the beginning of the observed predawn enhancement with the conjugate point sunrise. Airglow intensity measurements were obtained at Houston, in addition to data from international IGY and IQSY observatories. The predawn enhancement is found to have an average value of ~ 50 Rayleighs and a maximum of ~ 100 Rayleighs. Latitudinal limits of the enhancement are determined to be L ~ 1.1 to L ~ 3.2. Over the solar cycle, the enhancement is found to decrease by 50% during periods of minimal solar activity. From the measured intensity enhancements the required photoelectron fluxes are calculated. Between L ~ 1.1 and L ~ 3.2, the average conjugate flux of 10 ev photoelectrons is found to be 2 x 10 to the 8th cm -2 sec -1, which agrees with recent theoretical calculations. The potential significance of this study lies in its implications for magnetospheric electric fields and in the coincidence in L value of the twilight enhancement upper limit and the plasmapause.
dc.format.extent 93 pp
dc.language.iso eng
dc.title Twilight enhancement of 6300 A (OI) airglow
dc.identifier.digital RICE1135
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Space Physics and Astronomy
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.format.digitalOrigin reformatted digital
dc.identifier.callno Thesis SP.SCI. 1968 Bennett


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