Reaction Concept in Electromagnetic Theory

ter-of-mass motion accounts for a large part of the range of the Ba and Tb recoils in the forward direction, but does not exclude the possibility that lighter prod- ucts, such as Sr and Br, result largely from a fission reaction in which only a small portion of the kinetic energy of the incident proton is used for nuclear dis- integration.Finally, a detailed analysis of the results on the barium, strontium, and bromine nuclides at 2.2 Bev shows that the high-yield primary products are more neutron-deficient than those observed in the previously cited work'4 at lower energies.The Tl'" "' activities io the present experiments, as at lower energy, ' result pri- marily from the decay of lead and bismuth predecessors rather than from independent production.This probably accounts for the relatively low yield of TP", a shielded nuclide.