Study of Thallium, Lead, and Bismuth Nuclei Produced in the Bombardment of Gold with 380-Mev Protons

Abstract
Gold has been bombarded by the 380-Mev proton beam of the Nevis Cyclotron in a study of secondary reactions. Secondary reactions produce nuclei with charges greater than that of a target nucleus by means of an intermediate fragment emitted from one target nucleus and absorbed in a second. The increase in atomic number permits isolation of the effect by chemical separation.