Measurements have been made of muon-production and penetration-depth probabilities (punchthrough probabilities) for showers produced by 40-, 70-, and 100-GeV negative hadrons incident on an iron-scintillator calorimeter of a maximum depth of 4.8 m of steel. These results are also given for incident 70-GeV identified pions and kaons. Comparisons are made of punchthrough probabilities measured with pulse heights from scintillation counters and drift chambers. The transverse-radius distributions of particles in hadronic cascades are presented as a function of depth in the calorimeter.

• Received 1 December 1989

DOI:https://doi.org/10.1103/PhysRevD.42.759