Fig. 1From: Estimation of index of power law rigidity spectrum of cosmic rays using effective rigidity of multidirectional muon detectorEffective rigidity of the Nagoya muon detector vs. γ computed by formula (3) for R u=100 GV (squares), 200 GV (triangles), 500 GV (crosses), and 1000 GV (circles) and by formula (4) for R u=1000 GV (solid line)Back to article page