2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3958A measurement of the lateral distribution of Cherenkov light in Extensive Air Showers (EAS) at E0 = 10-100 TeV and a study of the compatibility of the photon number spectra with the expectations from the direct measurements of p and He spectra and the Corsika-QGSJET propagation code in the atmosphere have been performed at the National Gran Sasso Laboratories by the EAS-TOP and MACRO arrays. The telescope array of EAS-TOP has been used as the Cherenkov light detector. The muon tracking system of MACRO in the deep underground Gran Sasso Laboratories (Emuon> 1.3 TeV) served as the EAS detector, including core localization and arrival direction.Contribution to TAUP2001, Sep. 8-12, 2001, Assergi (Italy)Astrophysicstext