Emission of singlet deuterons was observed in the reaction ${\mathrm{B}}^{10}({\mathrm{He}}^3,d ){\mathrm{C}}^{11}$ by studying neutron-proton correlations. The resulting angular distributions are very similar to those of triplet deuterons and can be described in distorted-wave Born approximation assuming the $d$ to behave like a single particle.

• Received 29 December 1969

DOI:https://doi.org/10.1103/PhysRevLett.24.1028