Measurement of energy flow from oxygen, silicon and proton interactions with nuclei at the BNL Tandem-AGS

Measurements with a 160 beam of total energy 232 GeV and a 28Si beam of total energy 406 GeV at the BNL Tandem-AGS are reported. A lead glass array recorded the energy emitted by interactions of the beams with targets of C, Al, Cu, Ag and Au, while a beam calorimeter detected any remnant energy of the projectile after interaction. The shapes of the energy spectra imply that incident 14.5 GeV/c nucleons lose most of their energy in the first few collisions in a nucleus. It is shown that 160 and 28Si nuclei at this energy can be substantially stopped by nuclei the size of Cu. 8 refs., 9 figs