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Neutral hydrogen flux measured at 100- to 200-km altitude in an electron auroraNeutral hydrogen fluxes were measured at altitudes of 120-200 km by a rocket payload that also measured electron and proton fluxes and vector magnetic fields. An intense electron arc was crossed, while an upper limit to the flux of 0.5- to 20-keV protons was 1,000,000 per sq cm s sr keV. A neutral flux of 50,000,000 per sq cm s sr was observed, assuming hydrogen with greater than 1-keV energy, with greater north-south extent than the electron flux. Its pitch angle distribution was peaked toward 90 deg, tending toward isotropy in the center. This is fitted to a model describing spreading of an initial proton arc above 500 km.
Document ID
19750050948
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Iglesias, G. E.
Anderson, H. R.
(Rice University Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
June 1, 1975
Publication Information
Publication: Journal of Geophysical Research
Volume: 80
Subject Category
Geophysics
Accession Number
75A35020
Funding Number(s)
CONTRACT_GRANT: NAS6-1667
Distribution Limits
Public
Copyright
Other

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