Measurements of Proton, Helium and Muon Spectra at Small Atmospheric Depths with the BESS Spectrometer

K. Abe, T. Sanuki, K. Anraku +32

The cosmic-ray proton, helium, and muon spectra at small atmospheric depths of 4.5 -- 28 g/cm^2 were precisely measured during the slow descending period of the BESS-2001 balloon f…