An Investigation of Alpha-Particle Groups fromAl27(d,α)Mg25

The alpha-particle groups produced by the bombardment of aluminum by 10.8-Mev deuterons have been measured using nuclear emulsion plates for detection. Seven new levels in ${\mathrm{Mg}}^{25}$ were found at 6.98, 7.85, 8.62, 9.06, 975, 10.78, and 11.89 Mev. The previously known level at 4.01 Mev has been resolved into two levels at 3.96 and 4.12 Mev.