We report analyzing-power angular distributions for the ${}_{}{}^3{}_{}{}^{}\mathrm{He}(\overrightarrow{t},d){}_{}{}^4{}_{}{}^{}\mathrm{He}$ reaction at bombarding energies of 9.02, 12.86, and 17.02 MeV, and an excitation function at 90° c.m. from 9.02 to 17.27 MeV. The angular distributions show marked deviations from the antisymmetric shape predicted by a simple particle-transfer model incorporating charge symmetry. Reaction mechanisms and violations of charge symmetry which might account for the data are discussed.

NUCLEAR REACTIONS ${}_{}{}^3{}_{}{}^{}\mathrm{He}(\overrightarrow{t},d)$. Measured $A_y\left(\theta \right)$, ${\theta }_{\mathrm{c}.\mathrm{m}.\mathrm{}}=16\mathrm{}°-159°$, $E=9.02,12.86,17.02$ MeV; $A_y\mathrm{}\left(E\right)\mathrm{}$, $E=9.02\mathrm{}-17.27$ MeV, $\theta =90.0\mathrm{}°$ c.m.

• Received 20 April 1977

DOI:https://doi.org/10.1103/PhysRevC.16.2151