The energy of the first excited state of ${}_{}{}^{10}{}_{}{}^{}\mathrm{C}$ has been measured using the ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}(p,n\gamma ){}_{}{}^{10}{}_{}{}^{}\mathrm{C}$ reaction. The excitation energy was found to be 3.3527 MeV, with an error assignment of 1.5 keV. Also reported are excitation energies for the first four excited states of ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$.

• Received 20 January 1969

DOI:https://doi.org/10.1103/PhysRev.182.1104