Small-angle inelastic scattering of 40 MeV protons by 12C, 40Ca, 56Fe and 58Ni

Abstract

Angular distributions have been measured for inelastic scattering of 40 MeV protons to several states of 12C, 40Ca, 56Fe and 58Ni in the angular range of 4–20°. In a special small-angle scattering chamber, the inelastic protons were detected with a telescope consisting of three passing-geometry 3 mm Si(Li) detectors. Spurious events, produced when some of the very numerous elastic protons bombarding the detector produce nuclear reactions in it, were eliminated in a computer analysis. The experimental results are compared to DWBA and coupled-channel calculations, and to McCarthy's parity rule.