Gravitation, Cosmology, and Cosmic-Ray Physics (1986) / Chapter Skim
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IV. Cosmic Rays
IV. Cosmic Rays
Pages 111-114
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IV Cosmic Rays
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From page 113... ...
It began as the study of energetic particles in the atmosphere, which we now know to be the products of nuclear interactions between the primary cosmic rays and air nuclei. In the past 35 years high-altitude balloons and spacecraft have carried instruments above most of the atmosphere, and the focus of cosmic-ray studies has shifted to the composition and energy spectra of the primary particles themselves, which includes atomic nuclei and electrons.
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From page 114... ...
In both space and ground-based observations, instruments are now possible that will be capable of addressing some of the key astrophysical questions of processes of nucleosynthesis and particle acceleration, as well as questions of the physics of particle interactions at extremely high energies.
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