Momentum Distribution and Charge Ratio of µ?Mesons at Zenith Angles in the East?West Plane

Abstract

The momentum distribution and charge ratio of the penetrating component of the cosmic radiation at sea-level have been determined over the 'momentum range- 0�24-58 BeVlc at a geomagnetic latitude of 47 oS. The measurements were performed in the vertical direction and at zenith angles of 30� and 60� in the eastern and western azimuths.