The unbound level structure of ${}_{}{}^{10}{}_{}{}^{}\mathrm{C}$ has been studied using the ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}({}_{}{}^3{}_{}{}^{}\mathrm{He}, t){}_{}{}^{10}{}_{}{}^{}\mathrm{C}$ reaction. Bombarding energy was 38.2 MeV and tritons were detected in an energy-loss spectrometer. In the seven spectra taken, at lab angles from 2.5° to 30°, the broad 6.60 MeV prominence was well fitted by a single Lorentzian-shaped peak, while the 5.28 MeV region was well fitted by two peaks. The excitation energies of these peaks were obtained using known levels in ${}_{}{}^{11}{}_{}{}^{}\mathrm{C}$, populated from the ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}$ impurity in the ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$ target.

NUCLEAR REACTIONS ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}({}_{}{}^3{}_{}{}^{}\mathrm{He}, t)$; $E=38.2\mathrm{}$ MeV; deduced level structure in broad peaks by fitting spectra; measured $E_x$, $\Gamma$ of levels found.

• Received 26 August 1974

DOI:https://doi.org/10.1103/PhysRevC.12.335