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  • 1
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    Prediction of energetic particle disturbances (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: The prediction of fluxes of energetic particles of solar or magnetospheric origin is addressed. Topics include the prediction of the properties of the particle populations generated by magnetospheric storms and substorms, and the prediction of long term variations in the populations of magnetospheric particles.
    Keywords: SPACE RADIATION
    Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 415-432
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The storm and poststorm evolution of energetic /35-560 keV/ radiation belt electron distributions (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Detailed Explorer 45 equatorial observations of the storm and poststorm structure of radiation-belt electrons (35 to 560 keV) for L values between 1.7 and 5.2 are presented. Injection during major storms results in electron pitch-angle distributions and radial profiles that are greatly distorted from their quiet-time equilibrium structure. Following storms, the pitch-angle distributions return to their prestorm shape over a period of several days. This shape is maintained as electron fluxes decay back to the quiet-time levels. The equatorial radial profiles slowly return to their prestorm equilibrium structure over a period of a few weeks and then maintain that structure.
    Keywords: SPACE RADIATION
    Type: Journal of Geophysical Research; 80; Oct. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    The quiet time structure of energetic /35-560 keV/ radiation belt electrons (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Detailed Explorer 45 observations of quiet time pitch angle distributions and equatorial radial profiles of energetic radiation belt electrons are presented. The observed pitch angle distributions in the slot region and the outer regions of the plasmasphere are found to agree with the values expected from resonant interactions with the plasmaspheric whistler mode wave band, and Coulomb collisions are found to be the dominant electron loss mechanism in the inner zone. The overall structure of quiet time radial profiles is shown to agree with the equilibrium structure expected to result from a balance between pitch angle scattering losses and radial diffusion from an outer zone source, and this agreement suggests that the dominant quiet time source and loss mechanisms have been correctly identified. Electron fluxes in the inner plasmasphere are found to remain nearly constant during the quiet periods due to their decoupling from magnetic activity variations in the outer plasmasphere.
    Keywords: SPACE RADIATION
    Type: Journal of Geophysical Research; 80; Mar. 1
    Format: text
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    NASA TECHNICAL REPORTS
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