Low-energy neutral atoms in the Earth's magnetosphere: modeling

Kurt R. Moore; David J. McComas; Herbert O. Funsten III; Michelle F. Thomsen

doi:10.1117/12.60579

1 June 1992 Low-energy neutral atoms in the Earth's magnetosphere: modeling

Kurt R. Moore, David J. McComas, Herbert O. Funsten III, Michelle F. Thomsen

Proceedings Volume 1744, Instrumentation for Magnetospheric Imagery; (1992) https://doi.org/10.1117/12.60579
Event: San Diego '92, 1992, San Diego, CA, United States

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

Citation Download Citation

Kurt R. Moore, David J. McComas, Herbert O. Funsten III, and Michelle F. Thomsen "Low-energy neutral atoms in the Earth's magnetosphere: modeling", Proc. SPIE 1744, Instrumentation for Magnetospheric Imagery, (1 June 1992); https://doi.org/10.1117/12.60579

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