The competition between pn and d as well as between αpn and αd evaporation leading to the production of the same residual nuclei has been measured for nine and five heavy-ion-induced nuclear reactions, respectively, each at several bombarding energies. The deduced ${\sigma }_{\mathrm{pn}/{\sigma }_{\mathrm{d}}}$ ratios have been found to be in very good agreement with the predictions of a previously extracted empirical equation. The ratios ${\sigma }_{\alpha \mathrm{pn}/{\sigma }_{\alpha \mathrm{d}}}$ do not seem to depend on either the interacting system or the maximum excitation energy available to the residual nucleus.

• Received 31 December 1985

DOI:https://doi.org/10.1103/PhysRevC.34.872