The elastic scattering of α-particles from helium at 0.85 and 0.65 GeV

Elastic scattering of α-particles from helium has been measured at bombarding energies of 0.85 and 0.65 GeV over the range of four momentum transfer from 0.9 to 3.8 (GeV/c)2. The results are compared with the predictions of an α-α potential obtained by a folding procedure using a p-4He potential and 4He charge distribution.