Observations of the 3-D distribution of interplanetary electrons and ions from solar wind plasma to low energy cosmic rays

Details Observations of the 3-D distribution of interplanetary electrons and ions from solar wind plasma to low energy cosmic rays Observations of the 3-D distribution of interplanetary electrons and ions from solar wind plasma to low energy cosmic rays

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...36l&link_type=abstract

California Univ., International Solar Wind 8 Conference, p. 36

Physics

Solar Wind, Solar Physics, Spectrum Analysis, Electron Distribution, Ion Distribution, Cosmic Rays, Plasma Heating, Electron Plasma, Energy Spectra, Energy Transfer, Interplanetary Gas, Three Dimensional Flow, Electrostatic Probes, Angular Resolution, Temporal Distribution, High Resolution, Temporal Resolution, Telescopes, Microchannel Plates, Radiation Detectors

Scientific paper

The 3-D Plasma and Energetic Particle instrument on the GGS Wind spacecraft (launched November 1, 1994) is designed to make measurements of the full three-dimensional distribution of suprathermal electrons and ions from solar wind plasma to low energy cosmic rays, with high sensitivity, wide dynamic range, good energy and angular resolution, and high time resolution. Three pairs of double-ended telescopes, each with two or three closely sandwiched passivated ion implanted silicon detectors measure electrons and ions from approximately 20 keV to greater than or equal to 300 keV. Four top-hat symmetrical spherical section electrostatic analyzers with microchannel plate detectors, a large and a small geometric factor analyzer for electrons and a similar pair for ions, cover from approximately 3 eV to 30 keV. We present preliminary observations of the electron and ion distributions in the absence of obvious solar impulsive events and upstream particles. The quiet time electron energy spectrum shows a smooth approximately power law fall-off extending from the halo population at a few hundred eV to well above approximately 100 keV The quiet time ion energy spectrum also shows significant fluxes over this energy range. Detailed 3-D distributions and their temporal variations will be presented.

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