Search

Study of the elastic scattering of 600-MeV protons from light nuclei. Differential cross sections have been obtained for the scattering of protons from hydrogen, deuterium, helium-3, and helium-4. Polarization was measured for deuterium and He-4 nuclei. The p-p cross-section data are in excellent agreement with the predictions from the Livermore phase shifts. Small-angle p-D, p-He-3 elastic scattering data are compared with calculations based on the multiple-scattering theories of Watson and Glauber.

The differential cross section for elastic scattering of 42 MeV α-particles from 3 He has been measured between 20° and 160° c.m. A phenomenological description of the elastic scattering data is given by an optical-model calculation. To reproduce the shape of the differential cross section it was found that the absorptive potential was required to extend radially beyond the real potential. Including a small spin-orbit potential in the calculation improves the agreement with the experiment and predicts a polarization which is consistent with one measurement at a nearby energy. The reaction cross section given by the optical-model calculation is close to a lower limit estimated from integration of inelastic events observed. The two-body reactions 3 He(α, p) 6 Li ground and first excited state, were measured between 20° and 160° c.m. Optical potentials determined from elastic scattering data were used in a distorted wave Born approximation prediction for these cross sections. Qualitative agreement was obtained assuming only the 3 He stripping mode.

Proton-deuteron elastic large angle scattering cross sections, noting backward peak consistent with baryon exchange mechanism with resonance transfer

The differential cross section for elastic scattering of 600-MeV protons from $^{4}\mathrm{He}$ has been measured for laboratory angles between 4\ifmmode^\circ\else\textdegree\fi{} and 44\ifmmode^\circ\else\textdegree\fi{}. The data are analyzed in terms of the diffraction approximation of Glauber.

Asymmetry of polarized protons scattered from He 4 at 540 Mev for laboratory angles between 4 and 42 degrees

High energy proton-He 3 elastic scattering cross section measurement, comparing result with Glauber model calculation