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The scattering rate of solar 834 Å radiation by magnetospheric O + and O ++
Author(s) -
Meier R. R.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i010p01613
Subject(s) - sounding rocket , physics , scattering , rocket (weapon) , ionosphere , albedo (alchemy) , computational physics , solar energetic particles , radiation , ionospheric sounding , solar maximum , astrophysics , atomic physics , solar wind , plasma , solar cycle , astronomy , optics , nuclear physics , coronal mass ejection , art , aerospace engineering , performance art , art history , engineering
Several recent proposals to image sunlit magnetospheric O + have been difficult to assess because of the lack of detailed knowledge of the solar spectrum at 834 Å. An NRL solar spectrograph flown on a sounding rocket in 1962 actually had sufficient resolving power to allow the calculation of scattering rates. Using these solar data, examples of scattering rates for a range of thermal and bulk velocities are presented for both O + and O ++ , and the effects of ionospheric albedo are estimated. The scattering rates are significantly lower than previously estimated for hot or moving plasma and exhibit substantial structure.