Low-latitude E region ionization by energetic ring current particles

Details Low-latitude E region ionization by energetic ring current particles Low-latitude E region ionization by energetic ring current particles

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.2201l&link_type=abstract

Journal of Geophysical Research, vol. 83, May 1, 1978, p. 2201-2204.

Physics

5

Atmospheric Ionization, E Region, Ion Production Rates, Ionospheric Currents, Ring Currents, Tropical Regions, Charge Exchange, Electron Precipitation, Ion Motion, Neutral Particles, Night Sky

Scientific paper

Energetic neutral particles resulting from the charge exchange of ring current ions with geocoronal hydrogen are known to strike the atmosphere at low latitudes. The ionization rates caused by these particles in the low-latitude upper E region ionosphere are evaluated. It is found that these particles are an important quiet time source of E region ionization at night and that they can account for the observed increases in nighttime ionization that correlate with geomagnetic activity. This ionization has previously been attributed to 1- to 10 KeV electron precipitation. However, sufficiently intense precipitating electron fluxes have not been measured at low latitudes, and no sources of such electrons are known.

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