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Observations of ionospheric escape on venus' nightside
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Russell, C. T. Mihalov, J. D. Knudsen, W. C. Kasprzak, W. T. |
| Copyright Year | 1995 |
| Description | A population of low-energy (0-250 V E/q) ions with tailward directed velocity vectors and energies above that for escape from Venus is evident in nightside data from the Ames plasma analyzer on the Pioneer Venus Orbiter spacecraft. Good correlations with solar wind parameters were not obtained for the magnitudes of these ion fluxes, but tendencies for occurrence at times of tailward oriented magnetic fields and for alignment of the ion flows with the magnetic field were found. These tendencies seemed to be enhanced for higher-energy ions. In a few cases where comparisons were made, the ion fluxes were consistent with simultaneous O(+) measurements by the neutral mass spectrometer experiment on the spacecraft. The mean flux observed of the escaping nightside ions, averaged over an approximately 10-week-long spacecraft nightside season, was less than 2 x 10(exp 6) cm(exp -2) s(exp -1). |
| File Size | 574994 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970004244 |
| Archival Resource Key | ark:/13960/t0ms8nk2s |
| Language | English |
| Publisher Date | 1995-10-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration In Situ Measurement Venus Planet Planetary Ionospheres Planetary Magnetic Fields Ion Currents Ions Pioneer Venus 1 Spacecraft Solar Wind Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
