Abstract
Primary cosmic rays almost never reach sea level. Secondary particles do. Hadrons, electrons and γ-rays interact immediately with the rock and are quickly absorbed. 10 meters of rock provide two to three times more column depth than the whole atmosphere. Only very high energy muons (E > 500 GeV) can penetrate deep underground where they can be detected by underground detectors. So can neutrinos with their very small interaction cross-section.
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© 2010 Praxis Publishing Ltd, Chichester, UK
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Stanev, T. (2010). Cosmic rays underground. In: High Energy Cosmic Rays. Springer Praxis Books. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85148-6_7
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DOI: https://doi.org/10.1007/978-3-540-85148-6_7
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85147-9
Online ISBN: 978-3-540-85148-6
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