Effective Inelasticity Coefficient for Production of Electromagnetic Component by Hadron in Carbon Emulsion Chamber

Hadrons in the atmosphere at mountain altitude, e.g. 600 g/cm2 are registered with emulsion chambers, in the Pamir experiment among others with carbon chambers. High energy hadron (of tens or hundreds TeV) penetrating a chamber initiates nuclear electromagnetic cascade (NEC). Registration of hadron is made indirectly by registration of electromagnetic component of NEC. Simulation of NEC development in C-chamber has been made using Superposition of Independent Collisions model for h-A interactions and F00 model for h-Nucleon interactions. In the calculations effective inelasticity coefficient Keff chamber (ratio of sum of Eγ produced in chamber to Eh above chamber) has been estimated using various inelasticity coefficient distributions of mentioned models for h-N and h-A interactions. For extreme assumptions for inelasticity coefficient in each h-A interaction close Keff chamber values have been received. It can be concluded that carbon emulsion chamber behaves like pseudocalorimeter.