β Scribed by Sl. Cavallaro; F. Lo Piano
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The detailed features of the multistep evaporation process concerning the decay of the 59Cu compound nucleus, formed by a 32S-beam at an energy EL~b = 8 MeV/amu, have been analyzed with respect to mean decay paths leading to a selected residual nucleus, in the frame of an out-ofplane angular correlation experiment, at 90 Β°. For a given residual nucleus, mean multiplicities for neutrons, protons and a-particles as well as mean excitation energies and angular momenta from initial steps down to ground states have been calculated. For each step of the cascades, mean decay probabilities for neutrons, protons and a-particles as well as mean kinetic energies and transferred orbital angular momenta have been deduced. Whereas in the case of protons the anisotropy turns out to be actually independent of the compound nucleus JcN-angular momentum distribution, for ce-particles it is strongly depending on JCN and can therefore give severe constraints on the higher angular momenta sustained by the compound nucleus. @ 1997 Elsevier Science B.V.
π SIMILAR VOLUMES
A general method to calculate the angular distributions in a chain of decaying particles is described. A computer program has been developed to simulate events that can be compared with experimental data.