Angular distribution measurements were made of the differential cross section $\frac{d\sigma }{d\Omega }$ and the tensor analyzing powers $A_{\mathrm{yy}}$ and $A_{\mathrm{xx}}$ in $d-\alpha$ elastic scattering between deuteron beam energies of 17 and 45 MeV. The analyzing powers are large over this energy range and suitable for use as a secondary polarization standard. The use of rapid spin flip on the polarized ion source appreciably reduced experimental errors.

NUCLEAR REACTIONS ${}_{}{}^4{}_{}{}^{}\mathrm{He}\mathrm{}(d,d)\mathrm{}{}_{}{}^4{}_{}{}^{}\mathrm{He}$ elastic scattering, $E_d=17\mathrm{}-45$ MeV; measured $\frac{d\sigma }{d\Omega }$, tensor analyzing powers $A_{\mathrm{yy}}$ and $A_{\mathrm{xx}}$.

• Received 3 August 1979

DOI:https://doi.org/10.1103/PhysRevC.21.44