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A measurement of the absolute flux of cosmic-ray electronsA balloon-borne superconducting magnet spectrometer was used to measure the absolute flux of cosmic-ray electrons. The instrument consisted of a gas Cerenkov detector, a momentum spectrometer, and a lead-scintillator shower counter. In order to determine electron flux in the interstellar medium, observed fluxes for energy loss in the atmosphere and the payload were corrected, taking into account solar modulation effects and bremsstrahlung energy losses. Fluxes were measured at an average atmospheric depth of 5.8 g/sq cm, and the solar modulation was 300 MeV. A cosmic-ray electron flux of 367 E to the exp(3.15 + or -0.2) per sq m/sr s GeV was obtained in the energy range 4.5-63.5 GeV. The uncertainty of the absolute (electron-positron) flux was 10 percent. A summary of the electron data is given in a table.
Document ID
19850041340
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Golden, R. L.
(New Mexico State University Las Cruces, NM, United States)
Mauger, B. G.
(NASA Goddard Space Flight Center Greenbelt, MD; New Mexico State University, Las Cruces, NM, United States)
Badhwar, G. D.
(New Mexico State Univ. Las Cruces, NM, United States)
Daniel, R. R.
(NASA Johnson Space Center Houston, TX, United States)
Lacy, J. L.
(New Mexico State Univ. Las Cruces, NM, United States)
Stephens, S. A.
(NASA Johnson Space Center Houston, TX; Tata Institute for Fundamental Studies, Bombay, India)
Zipse, J. E.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA; NASA, Johnson Space Center Houston, TX, United States)
Date Acquired
August 12, 2013
Publication Date
December 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 287
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
85A23491
Funding Number(s)
CONTRACT_GRANT: NAGW-110
CONTRACT_GRANT: NAS9-15660
Distribution Limits
Public
Copyright
Other

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