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Plots of Ion Flux Spectra (H+,O+,He+,He++ per Orbit) and Moments (N,E,V; 1-3 min)


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1978-03-03 to 1979-12-29


This data set contains 143 4" x 6" B/W microfiche that accompany data set 77-102A-12F (digital, with analysis and plot programs). Plotted are ion flux spectra (H+, O+, He+, He++, per orbit) and moments (N, E, V). The digital data set (-12F) contains averaged values of ion composition data, excluding periods when the instrument was dedicated to solar wind observations. Analysis and plot programs accompany the data. Programs are provided that generate plots as follows: (1) mass spectra for given energy; (2) differential ion flux spectra (for six directions of ion motion) vs energy per charge for masses 1 and 16; (3) the same for masses 2 and 4; and (4) number density, mean energy in the plasma frame, and magnitude and angle (in the spin plane) of the inferred drift velocity, vs time. Hard copy plots of type 4 are what is included in this data set, with data points typically at 1-3 min intervals. In addition to these plots, which show one interval per plot, supplemental three-dimensional plots covering one orbit per plot are included for seven plot types: directional differential flux of H+ and O+, for both "transverse" and "parallel" directions; directional differential flux for He+ and He++, averaged over all pitch angles; and background rate, normalized to appear as a flux spectrum. An extensive user's guide for the data set was provided by the investigator.

Alternate Names

  • Parm Plts (Suppl to Data Set 12F)


  • Space Physics: Magnetospheric Studies
  • Space Physics: Heliospheric Studies


  • 77-102A-12G

Additional Information



Questions and comments about this data collection can be directed to: Dr. H. Kent Hills



NameRoleOriginal AffiliationE-mail
Dr. O. Walter LennartssonData ProviderLockheed Palo
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