Magnetic Analysis of the Be9(p, α)Li6 Reaction

The momentum spectrum of the alpha particles from the ${\mathrm{Be}}^{9}(p, \ensuremath{\alpha}){\mathrm{Li}}^{6}$ reaction has been measured in a magnetic spectrometer at 30\ifmmode^\circ\else\textdegree\fi{} with 10-MeV incident proton energy. The discrete alpha-particle groups observed correspond to states in ${\mathrm{Li}}^{6}$ at 0-, 2.19-, 3.55-, 4.40-, and 5.32-MeV excitation energy. Higher excited states are obscured at all angles of observation by the continuous alpha spectrum from the breakup in flight of ${\mathrm{Be}}^{8}$, ${\mathrm{Li}}^{6*}$, ${\mathrm{Be}}^{9*}$, and ${\mathrm{B}}^{9}$.