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Cosmic protons

Usoskin, I.; Laitinen, T.; Valtonen, E. +200 more

The primary proton spectrum in the kinetic energy range 0.2 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380 km. The complete data set combining three shuttle attitudes and including all known systematic effects is presented.

Leptons in near earth orbit

Usoskin, I.; Laitinen, T.; Valtonen, E. +199 more

The lepton spectra in the kinetic energy ranges 0.2 to 40 GeV for e^- and 0.2 to 3 GeV for e⁺ were measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380km. >From the origin of the leptons two distinct spectra were observed: a higher energy spectrum and a substantial secon…

Protons in near earth orbit

Finelli, F.; Santos, D.; Usoskin, I. +212 more

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 380km. 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 …

Helium in near Earth orbit

Usoskin, I.; Laitinen, T.; Valtonen, E. +201 more

The helium spectrum from 0.1 to /100 GeV/nucleon was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380 km. Above the geomagnetic cutoff the spectrum is parameterized by a power law. Below the geomagnetic cutoff a second helium spectrum was observed. In the second helium spectra over the ener…