The polarization of proton groups corresponding to the ground and first excited states in the reactions ${\mathrm{B}}^{10}(d, p){\mathrm{B}}^{11}$ and ${\mathrm{C}}^{12}(d, p){\mathrm{C}}^{13}$ have been measured for an incident deuteron energy of 7.8 Mev. With the exception of the first excited state of ${\mathrm{B}}^{11}$, the sign of the polarization for six known cases is consistent with the relation $P=(\pm )$ when $j_n=l_n\mp \frac{1}{2}$, the axis of quantization being defined by $\mathrm{n}={\mathrm{k}}_p\times {\mathrm{k}}_d$. The anomalous polarization of the first excited state of ${\mathrm{B}}^{11}$ is interpreted as evidence for a spin-flip exchange process in the stripping reaction.

• Received 4 November 1957

DOI:https://doi.org/10.1103/PhysRev.110.128