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| Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the ISS |
| Seminar Title | Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the ISS | | | | | Speaker: | Dr. XU Weiwei | | | | | Affiliation: | (MIT) | | | | | When | Monday afternoon, July 24, 15:00 p.m | | | | | Where: | Room 517, Office Block, 2 West Beijing Road (PMO, CAS) | | | Welcome to Attend | | | | | ( PMO Academic Committee & Academic Circulating committee) | | | Abstract: Precision measurements by AMS of fluxes and flux ratios of charged elementary particles in cosmic rays are presented. In the absolute rigidity range ∼60 to ∼500 GV, the antiproton, proton, and positron fluxes are found to have nearly identical rigidity dependence while the electron flux exhibits a different rigidity dependence. Below 60 GV, the antiproton-to-proton, antiproton-to-positron, and proton-to-positron flux ratios each reach a maximum. From ∼60 to ∼500 GV, these flux ratios show no rigidity dependence. These are new and unexpected observations of the properties of elementary particles in the cosmos |
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Copyright？ Purple Mountain Observatory, CAS, No.10 Yuanhua Road, Qixia District, Nanjing 210023, China
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