The reaction 4 He( 4 He, 4 He) 4 He* was investigated, using a 64-MeV a-particle beam. Absolute differential cross sections for the state near 20-MeV excitation are reported for the angular range 12.5°<0 o . m .<74°. We measure the excitation energy of this state to be 20.28=b0.05 MeV and the width to be 0.41 ±0.05 MeV. The shape and position of this state are shown to be consistent with an analysis based on the known properties of low-energy p-*H scattering.