Low-Resolution Survey of (d, α) Reactions in Heavy Nuclei

A low-resolution survey of ($d, \alpha$) reactions was made for about 28 heavy nuclei between $Z=28\mathrm{}$ and $Z=83\mathrm{}$ with an incident deuteron energy of 15 Mev. Energy distributions and cross sections were obtained at scattering angles of 30°, 60°, 90°, and 120°. The observed energy spectra are characterized by two strong peaks which vary regularly in energy and cross section with atomic weight. Energy distributions and cross sections of the low-energy peak are in accord with statistical theory. The principal features of the high-energy peak can be explained with the assumption of a process which involves the pickup of a proton and neutron from separate single-particle states.