The differential cross sections for the elastic scattering of deuterons by helium have been measured for deuterons of 0.9 to 3.5 Mev over an angular range from 15° to 160° in the center-of-mass system. The probable error in the absolute values of the cross sections is 3 percent or less. For angles greater than 60° the cross sections are roughly independent of angle except at 3.5 Mev where they decrease with increasing angle up to 90° and increase beyond.

• Received 21 February 1949

DOI:https://doi.org/10.1103/PhysRev.75.1678