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Detailed Reference Information
Imhof et al. 1975
Imhof, W.L., Nakano, G.H. and Reagan, J.B. (1975). Satellite observations of X rays associated with energetic electron precipitation near the trapping boundary. Journal of Geophysical Research 80: doi: 10.1029/JA080i025p03629. issn: 0148-0227.

A study is made of energetic electron precipitation near the trapping boundary by observing bremsstrahlung X rays with a broad angle collimated Ge(Li) X ray spectrometer on board a spinning low-altitutde (~750 km) polar-orbiting satellite. With this new technique, X ray intensities are measured as a function of view direction and satellite location, and thus nearly simultaneous observations of the electron precipitation patterns over a broad area are provided. Data are presented which indicate that electron precipitation spikes may occur near the trapping boundary and remain there for time durations as 3 min. During some unusual cases the X ray data indicate electron precipitations at high latitudes that are very dynamic in intensity and in position with respect to the trapping boundary. Examples of such dynamic precipitation events are presented and compared with other steady cases having similar geometries.

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Journal
Journal of Geophysical Research
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American Geophysical Union
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