The energy spectrum of protons from the breakup of ${\mathrm{B}}^9$ following ${\mathrm{He}}^3$ capture by ${\mathrm{Li}}^6$ has been obtained by means of a NaI crystal spectrometer. The energy range of the spectrum which corresponds to a range of excitation in ${\mathrm{Be}}^8$ up to 11 Mev, shows two groups of protons. Because of systematic errors known to be present, the energy determinations are preliminary. With an uncertainty of about 0.25 Mev, the energy difference between proton peaks corresponds to an energy interval in ${\mathrm{Be}}^8$ of 2.87 Mev.

• Received 13 April 1953

DOI:https://doi.org/10.1103/PhysRev.91.676