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Title: Solar flares and magnetospheric particles: investigations based upon the ONR-602 and ONR-604 experiments. Annual letter report for period ending 30 November 1987

Data from the ONR-602 experiment, obtained in a low-altitude polar orbit, are being analyzed to investigate the composition, intensity levels, and time variations of energetic charged particles both trapped within the Earth's magnetosphere and incident upon the magnetosphere from interplanetary space, particularly solar-flare particles. The effort involves both data analysis/interpretation and detailed modeling of the near-Earth environment. The research focusses on the global zones of low-energy-particle precipitation, including the South Atlantic Anomaly region from which access to the radiation belts is obtained, and the solar particle events of May-Nov., 1982. In addition, scientific/technical support is being provided to the ONR-604 experiment to be launched on the CRRES mission. The results of these investigations will enhance our understanding of the geospace radiation environment and its effects on men, materials, and electronic systems in space. The objectives of this research are to investigate the nature and origins of the particle populations in near Earth space by focusing on their spatial distributions, composition, energy spectra, and temporal variations and to look at couplings between interplanetary (solar-flare-generated) and magnetospheric populations. The goal is to understand the geospace environment in which men and spacecraft must survive and function.
Authors:
Publication Date:
OSTI Identifier:
6907877
Report Number(s):
AD-A-193396/9/XAB
Resource Type:
Technical Report
Research Org:
Louisiana State Univ., Baton Rouge (USA). Dept. of Physics and Astronomy
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHARGED-PARTICLE PRECIPITATION; TRAPPING; EARTH MAGNETOSPHERE; RADIATION BELTS; SOLAR FLARES; DATA PROCESSING; ELECTRONIC EQUIPMENT; INTERPLANETARY SPACE; PROGRESS REPORT; SOLAR ACTIVITY; SPATIAL DISTRIBUTION; SPECTRA; DISTRIBUTION; DOCUMENT TYPES; EARTH ATMOSPHERE; EQUIPMENT; PROCESSING; SPACE 640104* -- Astrophysics & Cosmology-- Solar Phenomena; 640201 -- Atmospheric Physics-- Auroral, Ionospheric, & Magetospheric Phenomena