The alpha particle spectra from the ${\mathrm{Li}}^7+d$ reactions were determined for deuteron energies from 0.7 to 3.0 MeV. Alpha-particle groups resulting from the breakup of ${\mathrm{Be}}^9$ and ${\mathrm{Be}}^8$ are identified. In the excitation functions of the different groups, states in ${\mathrm{Be}}^9$ are seen at $E_d=1.75\mathrm{} \mathrm{and} 2.5$ MeV, and in ${\mathrm{Be}}^8$ at $E_d=2.05\mathrm{}$ MeV and probably also at 2.5 MeV. They are presumably to be identified with the states at 18.1 and 18.6 MeV in ${\mathrm{Be}}^9$ tentatively assumed from earlier work and the states at 16.62 and 16.92 MeV in ${\mathrm{Be}}^8$ as also seen in earlier work.

• Received 7 November 1962

DOI:https://doi.org/10.1103/PhysRev.129.2698