Mean free paths and interaction cross-section of α-projectile fragments produced in oxygen-emulsion interaction at 60 GeV/n

Abstract

The work reports the results of the measurement of the mean free paths of α-particles emitted as the projectile fragment from16O-emulsion interactions at 60 GeV/n. From 357 primary peripheral events, 642 α-PFs are observed in a total track of 37 metres. The interaction mean free paths of the α-PFs have been found to be independent of the path length from their production points. Interaction cross-sections of the α-PFs are calculated from the experimentally determined mean free paths in terms of target particle concentration.