During the recent Variable Energy Cyclotron experiment involving the elastic scattering of protons on 12C, the complete energy spectrum of the scattered protons was obtained by means of a 100-channel analyser (McKenna, Baxter, and Shute 1961, henceforth referred to as I). Two prominent peaks were obtained: the higher energy one corresponding to elastic scattering and the lower energy one to inelastic scattering with the residual carbon nucleus being left in its first excited state, 4� 43 MeV. In I the elastic scattering results were reported briefly. The purpose of this short communication is to discuss the main features of the inelastic scattering.
AN RF SYSTEM FOR A VARIABLE ENERGY CYCLOTRON
