Abstract
The interactions of cosmic ray light nuclei and protons with different targets were studied at "Stratosphere" experiment at energies above 10 TeV in the Lab system.The results show that in the rare events, produced by alpha-particles and light nuclei, transverse momentum spectra of secondary γ-quanta in the soft region (up to 2 GeV/c) have exponential character with large values of inverse slope of the distributions: T A ∼ 0, 8 GeV /c.On the contrary, in the proton interactions the slope is essentially smaller T p ∼ 0, 2 GeV /c.For charged secondary particles the high order intermittency analyses have again demonstrated the large difference between events produced by protons and nuclei.So, essential system size dependence in the forward production dynamics was obtained with the limited statistics.Such processes with a large energy flux in the forward direction are difficult to measure at the Collider experiments.Current Large Hadron Collider forward (LHCf) experiment and future RHICf experiment are very important to give the information about the dynamics of strong interaction in both , high energy heavy ion physics and in high energy cosmic rays.However, there are different serious problems to compare directly the results of Stratosphere and LHCf experiments, including problem with different kinematics and the requirement for the study of the light nuclei interactions at the Colliders as well.In the present paper, as the first step, we compare the data of Stratosphere and LHCf experiments for PT spectra of γ-quanta and neutral pions production in the proton-induced interactions in commensurable rapidity intervals.