Excited States of Lithium-6 and Lithium-7

Excited states of Li6 and Li7 have been studied by analyzing the energy spectrum of scattered and disintegration particles emitted on proton bombardment of thin-rolled foils of natural lithium. A 13-inch diameter evacuated scattering chamber with aluminum windows at 30, M, 90, 120, and 150 degrees to the incident beam was used, and the scattered particles were analyzed by allowing them to strike the surface of a 1/8-inch thick NaI crystal, as described in the accompanying letter. The bombarding energy was 18 Mev.