The fragmentation of heavy cosmic ray nuclei in light elements

Abstract
The interaction and absorption fragmentation parameters and mean free paths of heavyZ  3, cosmic ray nuclei have been measured in polyethylene (CH2) n and teflon (CF2) n . Within the statistical accuracy of these results it has been shown that previously deduced values of the fragmentation parameters in the atmosphere were essentially correct, as were the mean free paths. Tentative values have been deduced for the fragmentation parameters in hydrogen and these have been compared with those assumed previously. The significance of these results is discussed.