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Posted: **Tue May 17, 2022 8:04 pm**

: 8 12 The Flux Of Relativistic Cosmic Ray Muons At The Surface Of The Earth Is Approximately 250 M 2 Use Figure 4 8 To 1 (10.97 KiB) Viewed 68 times

: 8 12 The Flux Of Relativistic Cosmic Ray Muons At The Surface Of The Earth Is Approximately 250 M 2 Use Figure 4 8 To 2 (37.98 KiB) Viewed 68 times

8.12 The flux of relativistic cosmic ray muons at the surface of the earth is approximately 250 m-2-!. Use Figure 4.8 to make a rough estimate of their rate of ionization energy loss as they traverse living matter. Hence estimate in grays the annual human body dose of radiation due to cosmic ray muons.

Figure 4.8 10 H, liquid -dE/dx (MeV g'cm) gas 4 1 0.1 1.0 1000 10000 10 100 Bype/M 0.1 100 1000 1.0 10 Muon momentum (GeV/c) 0.1 100 1000 1.0 10 Pion momentum (GeV/e) 100 LL 10000 0.1 1.0 10 1000 Proton momentum (GeVie) Figure 4.8 tonization energy loss for muons, pions and protons on a variety of materials. (See the text for an explanation of the units of d E/dr.) (From Amsler et al. (2008). Copyright (2008) Elsevier, reprinted with permission).