Investigations of Electromagnetic Cascades Produced in Lead by 2.5-GeV Bremsstrahlung

Electromagnetic cascades produced in lead with 2.5-GeV bremsstrahlung were studied by using a lead glass shower counter and a thin Nal(Tl) scintillator with the help of the Monte Carlo code. Measured pulse-height distributions that show the charged-particle track length or the energy deposition distributions in the detector caused by a single source photon are compared with calculated results. The energy spectra of transmitted particles obtained from the calculation are presented to show the behavior of the electromagnetic cascade development.