The reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^6$Li${,}^6$Li’${)}^{12}$C*${(}^6$Li,d${)}^{16}$(α${)}^{12}$C proceeding via the quasibound $4_2^{+}$ ($E^{\mathrm{*}}$=11.09 MeV) state of ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ has been suggested to proceed via a two-step process. We reinvestigate this case. Computing the angular correlation function W(${\Omega }_d$,${\Omega }_{\alpha }$) it is confirmed that the previous suggestions are indeed correct. Furthermore, our results indicate that the comparison of calculated W(${\Omega }_d$,${\Omega }_{\alpha }$) with experimental phase shifts may be used as a detector for two-step processes.

• Received 1 April 1988

DOI:https://doi.org/10.1103/PhysRevC.38.765