Measurement of Spin Polarization by Nuclear Scattering

Accurate measurements of differential cross sections for elastic scattering of protons from ${\mathrm{He}}^4$ and ${\mathrm{C}}^{12}$, and of ${\mathrm{He}}^3$ from ${\mathrm{He}}^4$ in the energy range 2-6 Mev have been phase-shift analyzed and the expected spin polarization of scattered particles calculated. The results, plotted as contours of equal spin polarization versus energy and angle, should be useful in accurate measurements of spin polarization and in addition show a number of rather striking complexities due to interference effects.