Measurement of p-T and p-3He elastic scattering analyzing powers below 4 MeV

The analyzing powers for p-T elastic scattering have been measured for E/sub p/ from 1.9 to 3.9 MeV. For p-3He elastic scattering, the analyzing powers have been measured for E/sub p/ from 2.1 to 3.74 MeV. These measurements were made using the polarized beam from the Ohio State University single-ended Van de Graaff accelerator. The beam polarization was typically 0.60, with intensities of approximately 30 nA. The polarization was monitored using a 4He polarimeter. The data were taken at four angles simultaneously using four pairs of symmetric detectors. The scattering chamber was rotated 1800 about the beam axis to effect a spin-flip for detector normalization. These data are much more accurate than any previously taken at these energies; all previous data were taken using double-scattering techniques. In addition to a discussion of the data, a description of the polarized source and a discussion of developments and improvements not covered in previous works is given, together with a description of the experimental apparatus and techniques used