Quasi-trapped and precipitating electrons have been observed with rocket-borne x-ray astronomy detectors in the altitude range 150 to 500 km. j Because the flights occurred at lowmagnetic latitudes the electrons were unexpected. Data from many flights Our x-ray astronomy observations ~ made with rocket-borne instruments have : repeatedly shown a strong background due _V to electrons. The existence of these: electrons surprised us, since the rocket t flights were at low latitudes and at alti tudes supposedly well below the radiation: belts. No electron detectors were car ried on the rockets, but we have been-5 able to derive a considerable amount of data on the electrons from the x-ray-^ detector observations. In this report we ~~ summarize 14 observations of such electrons trons and describe our continuing efforts ~'i to make an efficient x-ray collimator that "=; rejects electrons completely, which has j turned out to be a difficult problem. ._< The salient facts about these electrons. ; are as follows: • Counters with very thin windows (
be obtained by doing prior-form exact finiterange calculations with various radial cutoffs in the projectile interior wave function: Eliminating successively greater amounts of the projectile interior from the calculation in 1-fm increments changes at every step mainly the magnitude of the cross section and leaves its shape relatively unchanged, implying that any interior wave function would yield approximately the same shape as any other.The calculations were performed on the University of Texas CDC 6600 computer, and I wish to thank the computation center there for making time available.
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