The breakup of ${}_{}{}^{23}{}_{}{}^{}\mathrm{Na}$ nuclei into ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}$${+}^{12}$C and of ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$ nuclei into ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${+}^{12}$C has been studied using the reactions ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^{23}$Na${,}^{11}$${\mathrm{B}}^{12}$C${)}^{12}$C and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^{23}$Na${,}^{12}$${\mathrm{C}}^{12}$C${)}^{11}$B. Clear evidence was found for the breakup of the ${}_{}{}^{23}{}_{}{}^{}\mathrm{Na}$ and ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$ nuclei into the ground states of both fragments. The yieldrotect from the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^{23}$Na${,}^{11}$${\mathrm{B}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}^{12}$${\mathrm{C}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}$${)}^{12}$${\mathrm{C}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}$ reaction was concentrated in the region of excitationrotect energy in ${}_{}{}^{23}{}_{}{}^{}\mathrm{Na}$ between 24 and 28 MeV and fragmented among a number of states. Therotect ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^{23}$Na${,}^{12}$${\mathrm{C}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}$ ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}_{\mathrm{g}.\mathrm{s}.)}^{11}{}_{}{}^{}$${\mathrm{B}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}$ reaction was found to proceed chiefly via broad states at 22.1 and 23.9 MeV in ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$.

• Received 21 November 1994

DOI:https://doi.org/10.1103/PhysRevC.51.2606