Proton Groups from the Deuteron Bombardment of Boron

Protons emitted when boron enriched to 96 percent ${\mathrm{B}}^{10}$ was bombarded by 3.76-Mev deuterons have been observed at 90° and 0°. Groups corresponding to $Q$-values of 9.18±0.05, 7.03±0.06, 4.70±0.06, 4.15±0.08, 2.26±0.07, 1.36±0.07, 0.70±0.10, and 0.32±0.10 Mev were found. These have relative intensities at 90° of 1, 0.3, 0.8, 0.6, 16, 13, and 0.8. The intensity of the lowest energy group was not determined, since it was only just distinguishable from the scattered beam. The bombardment of unseparated boron gave no significant results, because of the presence of large amounts of an impurity, probably magnesium as the boride.