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Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station

CollaborationWith : Azzarello, Philipp / Bourquin, Maurice / Cadoux, Franck / Leluc, Catherine / Li, Yang / Paniccia, Mercedes / Perrina, Chiara / Pohl, Martin / Rapin, Divic Jean / Vitillo, Stefania / Wu, Xin
Published in Physical Review Letters. 2017, vol. 119, no. 25
Abstract We report the observation of new properties of primary cosmic rays He, C, and O measured in the rigidity (momentum/charge) range 2 GV to 3 TV with 90×10^6 helium, 8.4×10^6 carbon, and 7.0×10^6 oxygen nuclei collected by the Alpha Magnetic Spectrometer (AMS) during the first five years of operation. Above 60 GV, these three spectra have identical rigidity dependence. They all deviate from a single power law above 200 GV and harden in an identical way.
Keywords Cosmic RaysPrimary cosmic-raysHeliumCarbonOxygenSpectral featuresInternational Space StationAlpha Magnetic Spectrometer
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AMS COLLABORATION. Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station. In: Physical Review Letters, 2017, vol. 119, n° 25. https://archive-ouverte.unige.ch/unige:100533

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Deposited on : 2017-12-19

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