Search for Mossbauer type nuclear collisions with the high energy protons

Abstract

The collision of a high energy projectile with a massive target (nucleon cluster) can considerably increase the center of mass energy available at NAL. In some cases, such as neutrino interactions, the increased center mass energy might conceivably be 'traded' for higher neutrino energies. Thus determination of the characteristics and the fraction of collisions with nuclei that involve large target masses is of interest. We propose to attempt such a determination using several (A., Z) targets placed directly in front of the 30" hydrogen bubble chamber exposed to a 400 or 500 GeV/c proton beam. We will also search for new particles produced in heavy nuclei near the target and survey the KS spectrum produced in complex nuclei. We require no additional equipment but the bubble chamber and the beam. 60,000 photographs are requested.