Elastic Scattering of 9.7-Mev Protons byHe4

Abstract
The differential cross section for the scattering of 9.7-Mev protons from helium has been measured over the range from 17° to 154° in the center-of-mass system. The new 9.9-Mev proton linear accelerator, which is now used as an injector for the Bevatron, was used as a source of incident protons. A scattering chamber has been used that has the solid angles at the various scattering angles determined by fixed slits. The scattered particles were detected with sodium iodide scintillators and RCA 6199 photomultiplier tubes.