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Photoelectron energy loss and spectral features deduced by the plasma line techniquePlasma line data gathered at the Arecibo Observatory are used to examine relative variations in topside F region differential photoelectron fluxes in the 5- to 20-eV range. A spectral feature not found in present theoretically calculated spectra is noted near 15 eV. A new approach to the interpretation of the measured spectra is taken, which allows a qualitative estimate of the relative importance of different energy loss mechanisms. The altitude variation of the observed photoelectron flux energy spectra at the higher altitudes (above 350 km) and the lower energies (less than 10 eV) agrees quantitatively with the expected variation of the spectrum.
Document ID
19770044453
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Abreu, V. J.
(Michigan, University Ann Arbor, Mich., United States)
Carlson, H. C.
(Texas, University Richardson, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1977
Publication Information
Publication: Journal of Geophysical Research
Volume: 82
Subject Category
Geophysics
Accession Number
77A27305
Funding Number(s)
CONTRACT_GRANT: NSF DES-74-03082-A02
CONTRACT_GRANT: NAS5-11407
CONTRACT_GRANT: NSF DES-75-03986
CONTRACT_GRANT: NGL-44-004-130
Distribution Limits
Public
Copyright
Other

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