New calculations including an approximate treatment of Coulomb effects in the α-induced deuteron breakup reaction are compared with existing experimental results at $E_{\mathrm{d}=6\mathrm{}}$ and 7 MeV and with new measurements at $E_{\alpha }$=11.3 MeV. The α-p Coulomb potential allows the coupling to the ${}_{}{}^1{}_{}{}^{}\mathrm{S}_0^{}{}_{}{}^{}$ np channel which can give rise to a sharp peak in the $E_{\mathrm{np}=0\mathrm{}}$ region. We display the relevance of the two-body final state interactions and, in particular, of the isospin forbidden np singlet interaction, both theoretically and experimentally.

• Received 4 August 1986

DOI:https://doi.org/10.1103/PhysRevC.35.1563