Inelastic Scattering of Protons from Light Nuclei

An investigation has been made of inelastic scattering of 7.4-Mev protons at 90^∘{} from the following thin foil targets: Be, C¹², C¹³ (47 percent enriched), CaF₂, Ni, Al, and Na, and from the following gas targets: normal BF₃, enriched B¹⁰{F}₃$ (96 percent), ${N}₂$, ${O}₂$, C${H}₄$, and Ne. The following energy levels in Mev were observed: ${Be}⁹$ 2.57; ${B}¹⁰$ 2.34; ${B}¹¹$ 2.06; ${C}¹²$ 4.59; ${C}¹³$ 3.14, 4.03; ${N}¹⁴$ 2.35, 3.95; ${O}¹⁶$ none; ${F}¹⁹$ 1.53, 3.83; Ne 1.44, 4.36; ${Na}²³$ 3.67; Al 1.02, 2.30, 2.89, 3.32, 4.48; Ni 1.44.