مورد إلكتروني
X-Ray Imagery of Energetic Electron Inputs to the Atmosphere at High Latitudes
| العنوان: | X-Ray Imagery of Energetic Electron Inputs to the Atmosphere at High Latitudes |
|---|---|
| المصدر: | DTIC AND NTIS |
| بيانات النشر: | 1990-05-03 |
| تفاصيل مُضافة: | LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB Imhof, W. L. Datlowe, D. W. Gaines, E. E. Mobilia, J. Vondrak, R. R. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The precipitation of electrons > 4 keV into the atmosphere occurs at locations spanning a wide range of latitudes and longitudes. The regions where these electrons precipitate have been mapped with a bremsstrahlung x-ray spectrometer in the SEEP payload on the S81-1 spacecraft. Spike-like x-ray emission regions are observed from precipitation originating in the radiation belts. A spike is most often present near the outer edge of the belt, frequently in the form of an arc at a constant invariant latitude. Poleward of the radiation belt boundary, strong arcs are observed as well as weaker patches and widespread events. The arcs are most often singular, but pairs of adjacent arcs are also observed. Detailed energy spectrum and intensity versus latitude profiles of these events have also been measured with electron spectrometers on the satellite. The energy inputs to the atmosphere from electron precipitation >4 keV are generally concentrated in very localized regions in contrast to the more widespread inputs from lower energy electrons. This may produce significant gradients in ionization in the upper atmosphere and thereby affect radio wave propagation. The energy deposition profiles at these restricted positions are presented and compared with the profiles due to cosmic rays which occur at all latitudes and longitudes. This article is from 'The Effect of the Ionosphere on Radiowave Signals and Systems Performance Based on Ionospheric Effects Symposium Held on 1-3 May 1990', AD-A233-797, p82-91. |
| مصطلحات الفهرس: | Atmospheric Physics, IONOSPHERIC DISTURBANCES, ELECTRON DENSITY, HIGH LATITUDES, PRECIPITATION, BREMSSTRAHLUNG, RADIATION BELTS, PROFILES, RADIO WAVES., Component Reports, X Ray spectrometers, Ionospheric transmission., Text |
| URL: | |
| الإتاحة: | Open access content. Open access content APPROVED FOR PUBLIC RELEASE |
| ملاحظة: | text/html English |
| أرقام أخرى: | DTICE ADP006273 831628738 |
| المصدر المساهم: | From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.ocn831628738 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |