The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380 km. Above the geomagnetic cutoff the observed spectrum is parameterized by a power law. Below the geomagnetic cutoff a substantial second spectrum was observed concentrated at equatorial latitudes with a flux ∼70 m−2 s−1 sr−1. Most of these second spectrum protons follow a complicated trajectory and originate from a restricted geographic region.
Protons in near earth orbit
Bertucci B.;
2000
Abstract
The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380 km. Above the geomagnetic cutoff the observed spectrum is parameterized by a power law. Below the geomagnetic cutoff a substantial second spectrum was observed concentrated at equatorial latitudes with a flux ∼70 m−2 s−1 sr−1. Most of these second spectrum protons follow a complicated trajectory and originate from a restricted geographic region.File in questo prodotto:
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