Abstract

The inelasticity distribution of hadron-lead collisions in the energy region exceeding ${10}^{14}$ eV is estimated on the basis of 66 events, induced by cosmic ray hadrons and detected at high mountain altitudes at Pamir (4300 m, 595 ${\mathrm{g}/\mathrm{c}\mathrm{m}}^{2}).$ The distribution of the best fitting is approximated as $g(K)dK=[\ensuremath{\alpha}(1\ensuremath{-}{K)}^{{m}_{1}\ensuremath{-}1}+\ensuremath{\beta}{K}^{{m}_{2}\ensuremath{-}1}]dK,$ where ${m}_{1}=0.5,$ ${m}_{2}=1.125,$ $\ensuremath{\alpha}=0.26,$ $\ensuremath{\beta}=0.55,$ giving $〈K〉=0.60.$ The errors of the parameters are discussed in the text. The distribution is compared with those which are based on theoretical models.

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