Angular distribution of low momentum atmospheric muons at ground level

Abstract We report measurements of the angular distributions low momentum atmospheric muons at 38 m above sea level for zenith angles θ between -60 and 60 degrees in south-north direction. The muon detection was performed with two NaI(Tl) scintillation detectors mounted coincidence. An adjustable lead thickness placed allowed to select a minimal ranging from 0.3 0.9 GeV/c. integrated differential flux were determined by analyzing deposited energy spectra scintillators backed up Geant4 simulation experimental setup. results are consistent cos n ( ) distribution good agreement literature. These data contribute fill gap geomagnetic cutoff rigidity interval 8 GV < P c 14 where no similar before. found that = 1.88 - 0.12 μ this domain momenta 1 present useful many studies requiring an accurate flux.