Electroproduction of alpha particles from various nuclei showing direct and statistical effects

$\alpha$ particles from the electrodisintegration of seven nuclei with $Z$ between 29 and 79 have been observed. Energy spectra at 50° in the laboratory for six nuclei and angular distribtions for five nuclei are reported. The cross sections exhibit a broad peak whose magnitude decreases with increasing $Z$; the energy of the peak increases as $Z$ increases. Angular distributions at the highest energies measured become increasingly forward peaked suggesting a direct-reaction process.