Author/Authors :
Vulpescu، نويسنده , , B. and Wentz، نويسنده , , J. and Brancus، نويسنده , , I.M. and Rebel، نويسنده , , H. and Badea، نويسنده , , A.F. and Bozdog، نويسنده , , H. and Duma، نويسنده , , M. and Haungs، نويسنده , , A. and Mathes، نويسنده , , H.-J. and Petcu، نويسنده , , M. and Roth، نويسنده , , M.، نويسنده ,
Abstract :
A compact sampling calorimeter is developed and used to measure the ratio between positive and negative muons in the cosmic-ray flux at momenta below 1 GeV/c. The delayed coincidence method is used, based on the reduced mean lifetime of negative muons due to nuclear capture in matter. It is shown that aluminum is a good choice as a capture medium for negative muons and suitable for a simple detector set-up. The muon charge ratio is found to be 1.30±0.05 for a mean momentum of 0.86 GeV/c and over a zenith angle acceptance with Θmean=26°.
