The Energy Spectrum of 0.16 to 3 MeV Electrons during Solar Quiet Time
- Creators
- Hurford, G. J.
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Mewaldt, R. A.
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Stone, E. C.
Abstract
New observations of the quiet-time energy spectrum of 0.16 to 3 MeV electrons have been made with teh Caltech Electron/Isotope Spetrometer which was launched on IMP-7 in September 1972. Recent measurements of quiet-time electrons in this energy range by other groups have resulted in spectra differing by more than an order of magnitude in intensity. We find a minimum quiet-time flux level similar to the lowest previously reported spectra and consistent with an extrapolation of the spectrum measured at higher energies. A galactic secondary source of knock-on electrons is consistent with our results provided there is negligible solar modulation. Although not required, other recently suggested sources may also contribute to the observed fluxes.
Additional Information
Copyright University of Colorado. Dr. J. E. Lupton made significant contributions to this program, which was supported by NASA contract NAS5-11066 and grant NGR 05-002-160.Attached Files
Published - 1973-03.pdf
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Additional details
- Eprint ID
- 44754
- Resolver ID
- CaltechAUTHORS:20140408-102714340
- NASA
- NAS5-11066
- NASA
- NGR 05-002-160
- Created
-
2014-04-08Created from EPrint's datestamp field
- Updated
-
2020-02-20Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1973-03