A study of the characteristics of cosmic-ray hadrons at Mt. Kambala

The characteristics of cosmic-ray hadrons are studied using emulsion chambers installed at Mt. Kambala, 5500 m above sea level. At Mt. Kambala, the power index of the differential energy spectrum is (2.98 +- 0.49) in the energy region from 2 TeV to 20 TeV. The vertical flux of hadrons with E/sub h/>3 TeV is (400 +- 50)/year x m/sup 2/ x sr; their attenuation length in air is (104 +- 16) g/cm/sup 2/; the mean interaction lengths of hadrons and mesons in Pb are (15.3 +- 3.0) cm and (18.6 +- 4.7) cm, respectively; and the meson-to-nucleon ratio in cosmic-ray hadrons is (1.0 +- 0.4).