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The absorption length of EAS at sea level

1980; IOP Publishing; Volume: 6; Issue: 3 Linguagem: Inglês

10.1088/0305-4616/6/3/016

2057-763X

M. F. Bourdeau, J N Capdevielle, J. Procureur, J. Gawin,

High-Energy Particle Collisions Research

A simulation of integral size spectra with various assumptions about the primary energy spectrum has been performed at different depths and in several zenith angle bins (0 degrees -40 degrees ). The absorption length Lambda has been derived directly from the data with accurate consideration of the experimental procedures, the angular and barometric methods. A systematic consequence of the steepening of the primary spectrum ('knee effect') is seen to emerge in the behaviour of Lambda as a function of size between 104 and 108 particles. A consecutive interpretation of the present data in terms of dynamical ultra-high-energy interactions reveals a strong disagreement with the Feynman scaling hypothesis.