Elastic scattering of polarized protons fromHe3at intermediate energies

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Abstract

Differential cross sections and analyzing powers for proton elastic scattering from $^{3}\mathrm{He}$ have been measured for proton scattering angles between 15\ifmmode^\circ\else\textdegree\fi{} and 150\ifmmode^\circ\else\textdegree\fi{} in the center of mass at incident proton energies of 200, 300, 415, and 515 MeV. These data, together with data from the literature, in the energy range 100--1000 MeV, have been analyzed within the framework of the Glauber multiple scattering theory. Firstly, a simple spin-independent calculation was performed using a parametrized form for the N-N scattering amplitudes. This provided reasonable agreement with the differential cross section data. Secondly, a more detailed calculation was performed incorporating spin dependence and using a complete set of N-N scattering amplitudes as determined from phase shift analyses. The agreement with the experimental data was not improved by the more detailed calculation. Possible reasons for this discrepancy are discussed.

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