The Reaction Be9 ( p , αγ ) Li6

The energy of the gamma-radiation produced when ${\mathrm{Be}}^{9}$ is bombarded by 2.6-Mev protons has been measured with a scintillation spectrometer and found to be 3.58\ifmmode\pm\else\textpm\fi{}0.04 Mev. A suggestion of Hushley that this gamma-ray is produced in the reaction ${\mathrm{Be}}^{9}$ ($p$,$\ensuremath{\alpha}\ensuremath{\gamma}$) ${\mathrm{Li}}^{6}$ was verified by observing coincidences between the gamma-rays and low energy alpha-particles. The excited state of ${\mathrm{Li}}^{6}$ which emits the gamma-rays probably has spin zero and even parity and is presumably the analog of the ground state of the isobaric nucleus, ${\mathrm{He}}^{6}$. The thick target yield and cross section at resonance were found to be 4.8\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}6}$ gamma-rays per proton and 0.11\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}24}$ ${\mathrm{cm}}^{2}$, respectively.