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Energetic electrons in the midlatitude nighttime e region
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Geller, M. A. Smith, L. G. Voss, H. D. |
| Copyright Year | 1973 |
| Description | Nike Apache 14.439 was launched from Wallops Island at 0003 EST on 1 November 1972, a very disturbed night (K sub P = 8). A Geiger counter in the payload detected electrons ( keV) with a maximum flux of 1086 + or -261/sq cm/sec/ster. The height-averaged ionization rate in the upper E region is calculated from the measured electron density profile and has a value of 35 1/cu/cm/sec. The ionization rate can be reconciled with the observed flux of electrons ( 70 2 keV) if the spectrum ( keV) is of the form J ( E) = J sub O exp(-E/E sub O) with E sub O equal to 8.3 keV. The ionization rate on this and other nights is found to be strongly dependent on geomagnetic activity. It is suggested that energetic electrons are the principal source of ionization at midlatitudes in the upper E region near midnight, even under rather quiet geomagnetic conditions. |
| File Size | 541179 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740010913 |
| Archival Resource Key | ark:/13960/t0zp8sw0k |
| Language | English |
| Publisher Date | 1973-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Geomagnetic Latitude Nike-apache Rocket Vehicle Atmospheric Ionization Sudden Ionospheric Disturbances Midlatitude Atmosphere Electron Density Profiles Flux Rate Night Sky Electron Energy E Region Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
