The tensor analyzing powers of the ${}_{}{}^1{}_{}{}^{}\mathrm{H}(\overrightarrow{d},\gamma ){}_{}{}^3{}_{}{}^{}\mathrm{He}$ reaction initiated by a polarized beam are studied using the Sasakawa wave function for the three-body bound state and neglecting initial state interactions. Good agreement is obtained with recent $A_{\mathrm{yy}}$ data taken at $E_{\gamma }=14.66\mathrm{}$ MeV. It is shown that at low energy the tensor analyzing powers are sensitive to the asymptotic region of the bound state wave function and can be used to determine the asymptotic $\frac{D}{S}$ state ratio, $\eta$, in ${}_{}{}^3{}_{}{}^{}\mathrm{He}$.

• Received 3 October 1983

DOI:https://doi.org/10.1103/PhysRevC.29.1945