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Proceedings Paper

Low-energy neutral atoms in the Earth's magnetosphere: modeling
Author(s): Kurt R. Moore; David J. McComas; Herbert O. Funsten III; Michelle F. Thomsen
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Paper Abstract

Detection of low energy neutral atoms (LENAs) produced by the interaction of the Earth's geocorona with ambient space plasma has been proposed as a technique to obtain global information about the magnetosphere. Recent instrumentation advances reported previously1 and in these proceedings (McComas et a!., Funsten et aL) provide an opportunity for detecting LENAs in the energy range of <1 keV to -5O keY. In this paper, we present results from a numerical model which calculates line of sight LENA fluxes expected at a remote orbiting spacecraft for various magnetospheric plasma regimes. This model uses measured charge exchange cross sections, either of two neutral hydrogen geocorona models, and various empirical models of the ring current and plasma sheet to calculate the contribution to the integrated directional flux from each point along the line of sight of the instrument. We discuss implications for LENA imaging of the magnetosphere based on these simulations

Paper Details

Date Published: 1 June 1992
PDF: 11 pages
Proc. SPIE 1744, Instrumentation for Magnetospheric Imagery, (1 June 1992); doi: 10.1117/12.60579
Show Author Affiliations
Kurt R. Moore, Los Alamos National Lab. (United States)
David J. McComas, Los Alamos National Lab. (United States)
Herbert O. Funsten III, Los Alamos National Lab. (United States)
Michelle F. Thomsen, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 1744:
Instrumentation for Magnetospheric Imagery
Supriya Chakrabarti, Editor(s)

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