Anomalous populations of particle-unbound states in ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$

Relative populations of particle unstable states in ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$ were measured for the normal kinematics reactions ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$${+}^{27}$Al and ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$${+}^{197}$Au at E/A=75 MeV, the nearly symmetric reaction ${}_{}{}^{129}{}_{}{}^{}\mathrm{Xe}$${+}^{122}$Sn at E/A=31 MeV, and the inverse kinematics reaction ${}_{}{}^{129}{}_{}{}^{}\mathrm{Xe}$${+}^{27}$Al at E/A=31 MeV. In all cases, populations of excited states are incompatible with statistical populations of the known excited states of this nucleus. For the ${}_{}{}^{129}{}_{}{}^{}\mathrm{induced}$ reactions, discrepancies are smaller than for the ${}_{}{}^{14}{}_{}{}^{}\mathrm{induced}$ reactions. The overall agreement with statistical calculations is improved by assuming a proposed but not confirmed $3^{+}$ excited state contributing to the group of levels at ${\mathit{E}}^{\mathrm{*}}$=6 MeV.