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Advances in High Energy Physics
Volume 2013, Article ID 391573, 4 pages
Research Article

Geant4 Simulation Study of Deep Underground Muons: Vertical Intensity and Angular Distribution

Department of Physics, Sakarya University, 54187 Sakarya, Turkey

Received 28 July 2013; Accepted 19 September 2013

Academic Editor: Carlo Cattani

Copyright © 2013 Halil Arslan and Mehmet Bektasoglu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Underground muon intensities up to 10000 m.w.e. and angular distribution up to 6500 m.w.e. in standard rock have been investigated using Geant4 simulation package. Muons with energies above 100 GeV were distributed from the ground level taking into account the muon charge ratio of ~1.3 at sea level. The simulated differential muon intensities are in good agreement with the intensities given in the literature. Furthermore, the simulation results for the integrated intensities are consistent with the experimental data, particularly at depths above 4000 m.w.e., where the simulation gives slightly smaller intensities than the experimental ones. In addition, the simulated exponent n at different underground depths agrees well with the experimental points, especially above ~2000 m.w.e.