The elastic scattering of ${\mathrm{He}}^3$ particles from a ${\mathrm{He}}^3$ target has been investigated for bombarding energies between 3 and 12 MeV. Excitation curves were obtained for center-of-mass scattering angles 30.6°, 54.8°, 70.1°, and 90°; and angular distributions were measured at bombarding energies of 3.03, 5.90, 7.91, 9.92, and 11.93 MeV. The excitation curves are without structure and all decrease with increasing energy in a smooth, monotonic fashion. The five angular distributions exhibit marked disagreement with theoretical predictions based on the resonating group structure method.

• Received 19 December 1962

DOI:https://doi.org/10.1103/PhysRev.130.1108