196 citations · 987 across the 49 of their papers we have counts for
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Origin of the Proton-to-Helium Ratio Anomaly in Cosmic Rays
Nicola Tomassetti
Recent data on Galactic cosmic rays (CRs) revealed that the helium energy spectrum is harder than the proton spectrum. The AMS experiment has now reported that the proton-to-helium…
AMS-02 in Space: Physics Results
Nicola Tomassetti
The Alpha Magnetic Spectrometer (AMS-02) is a particle physics experiment designed to study origin and nature of Galactic Cosmic Rays (CRs) up to TeV energies from space. With its…
AMS-02 in space: physics results, overview, and challenges
Nicola Tomassetti
The Alpha Magnetic Spectrometer (AMS-02) is a state of the art particle detector measuring cosmic rays (CRs) on the International Space Station (ISS) since May 19th 2011. AMS-02 id…
Identification of Light Cosmic-Ray Nuclei with AMS-02
Nicola Tomassetti, Alberto Oliva
AMS-02 is a wide acceptance (0.5 m2 sr) and long duration (up to 20 years) magnetic spectrometer operating onboard the International Space Station since May 2011. Its main scientif…
Inhomogeneous diffusion model for recent data on high-energy cosmic rays
Nicola Tomassetti
The AMS Collaboration has recently released precision data on cosmic ray (CR) leptons and protons at high energies. Interesting progresses have also been made on the measurement of…
Consistent description of leptonic and hadroninc spectra in cosmic rays
Nicola Tomassetti
The AMS Collaboration has recently released data on cosmic ray (CR) leptons and hadrons that can shed light on two exciting problems in CR physics: on one side, the origin of the r…
Fragmentation cross-sections and model uncertainties in Cosmic Ray propagation physics
Nicola Tomassetti
Abundances and energy spectra of cosmic ray nuclei are being measured with high accuracy by the AMS experiment. These observations can provide tight constraints to the propagation…
Examination of uncertainties in nuclear data for cosmic ray physics with the AMS experiment
Nicola Tomassetti
High-energy Li-Be-B nuclei in cosmic rays are being measured with unprecedent accuracy by the AMS experiment. These data bring valuable information to the cosmic ray propagation ph…
Cosmic-ray protons, nuclei, electrons, and antiparticles under a two-halo scenario of diffusive propagation
Nicola Tomassetti
We report calculations of cosmic-ray proton, nuclei, antiproton, electron and positron energy spectra within a "two-halo model" of diffusive transport. The two halos represent a si…
Origin of the spectral upturn in the cosmic-ray C/Fe and O/Fe ratios
Nicola Tomassetti
The observed spectrum of Galactic cosmic rays has several exciting features such as the rise in the positron fraction above ~10 GeV of energy and the spectral hardening of protons…
The Connection Between the Positron Fraction Anomaly and the Spectral Features in Galactic Cosmic-Ray Hadrons
N. Tomassetti, F. Donato
Recent data on Galactic cosmic-ray (CR) leptons and hadrons gave rise to two exciting problems: on the lepton side, the origin of the rise of the CR positron fraction e+/(e- + e+)…