An analysis of available data, with emphasis on the ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}\mathrm{}(d,p)\mathrm{}$ and ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}\mathrm{}(p,x)\mathrm{}$ reactions, indicates that the analogs of the first seven ${}_{}{}^{12}{}_{}{}^{}\mathrm{B}$ states can be identified in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$. Neutron reduced widths ${{\gamma }_{\lambda n}}^2$ for the first six states in ${}_{}{}^{12}{}_{}{}^{}\mathrm{B}$ are calculated from spectroscopic factors which were extracted from the ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}\mathrm{}(d,p)\mathrm{}$ data by use of a distored-wave Born approximation analysis. Proton reduced widths ${{\gamma }_{\lambda p}}^2$ of the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ analog states are deduced from observed widths by use of an $R$-matrix formulation. It is found that the analog relationship $\frac{{{\gamma }_{\lambda n}}^2}{2{{\gamma }_{\lambda p}}^2}=1\mathrm{}$ is satisfied to within ∼30% for all of the observed pairs of states, except for the pair corresponding to the ${}_{}{}^{12}{}_{}{}^{}\mathrm{B}$ first excited state. The possibility that this discrepancy is due to experimental error is discussed.

• Received 1 March 1971

DOI:https://doi.org/10.1103/PhysRevC.3.2192