The ${}_{}{}^4{}_{}{}^{}\mathrm{He}$${(}^4$He${,}^3$He${)}^5$He(g.s.) reaction was observed at 118 MeV for c.m. angles from about 30° to 120°. DWBA calculations accurately predict the shapes of the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ spectra for ${\mathrm{\epsilon }}_{\mathrm{\alpha }\mathit{n}}$≤2.5 MeV, where ${\mathrm{\epsilon }}_{\mathrm{\alpha }\mathit{n}}$ is the relative energy of the final α-n system. However the measured differential cross sections are smaller than the DWBA predictions by about a factor of 2 at forward angles, and have a less pronounced minimum at 90° c.m. than the theory predicts.

• Received 22 September 1993

DOI:https://doi.org/10.1103/PhysRevC.49.1534