The polarization of deuterons produced in the ${}_{}{}^9{}_{}{}^{}\mathrm{Be}\mathrm{}(p,d)\mathrm{}{}_{}{}^8{}_{}{}^{}\mathrm{Be}$ ground-state reaction was measured at several deuteron emission angles in the region of the stripping peak for proton energies of 3, 4, and 5 MeV. A carbon analyzer via the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}\mathrm{}(d,p)\mathrm{}{}_{}{}^{13}{}_{}{}^{}\mathrm{C}$ ground-state reaction was used, along with the relationship $\epsilon$ $\left(\mathrm{the}\mathrm{asymmetry}\right)=3\mathrm{} {\mathbf{P}}_p.{\mathbf{P}}_d$, to determine the magnitude and sign of the deuteron polarization. At 3 and 4 MeV the sign near the stripping peak was found to be positive, which is in agreement with earlier experimental findings and with distorted-wave Born-approximation calculations for which deuteron-wave distortion is assumed to predominate. At 5 MeV, however, the sign was measured to be negative, which may be due to a relatively greater proton-wave distortion at this energy.

• Received 4 November 1965

DOI:https://doi.org/10.1103/PhysRev.143.688