A study on hadron interactions through observation of cosmic-ray families of visible energy greater than 500 TeV in high mountain emulsion chambers Original Research Article

The characteristics of hadron interactions are studied with emulsion chambers exposed at both Mt. Chacaltaya and the Pamirs. The total exposure iauthor330 m2 year. Event by event surveys on the shower configurations in a single family event were accomplished over the 75 cosmicray families in the highest energy range, i.e., visible energy greater than 500 TeV. Extraordinary characteristics of high energy shower clusters of small spread and the exotic type interactions, Centauro species, are discussed from the cosmic-ray-family phenomenological point of view.