Angular Distribution ofCu64Nuclei from theCu65(

Abstract

The angular distribution of Cu 64 nuclei produced in the interaction of He 3 ions with Cu 65 has been measured over the energy range 12-32 MeV. The results have been compared with a distorted-wave calculation for the (He 3 ,a) pickup process and with a statistical-theory ; calculation for the evaporation process. It is found that contributions from both mechanisms are required to reproduce the data. The compound-nuclear process, which involves the evaporation of an a particle at the lower energies and of four nucleons at the higher ones, accounts for most of the Cu 64 yield at small angles to the beam, whereas the pickup process accounts for most of it. at large angles.

ANGULAR DISTRIBUTIONS OF /sup 137m/Ce AND /sup 137g/Ce FROM THE $sup 134$Ba($alpha$,n) REACTION.

“…The experimental procedure .followed that of earlier reports from this laboratory3, 8,9). The recoiling nuclei were emitted from a thin target in a forward cone and were stopped in a circular catcher foil located at a known distance from the target.…”