Inelaticity in hadron-nucleus collisions from emulsion chamber studies

The inelasticity of hadron-carbon nucleus collisions in the energy region exceeding 100 TeV is estimated from the carbon-emulsion chamber data at Pamirs to be h K C i = 0 . 65 ± 0 . 08. When combined with the recently presented data on hadron-lead nucleus collisions taken at the same energy range it results in the K ∼ A 0 . 086 mass number dependence of inelasticity. The evaluated partial inelasticity for secondary ( ν > 1) interactions, K ν> 1 ≃ 0 . 2, suggests that the second and higher interactions of the excited hadron inside the nucleus proceed with only slight energy losses.