The absolute cross section of n+d→n+n+p at 10.3 MeV incident neutron energy has been measured in the so called ‘‘space-star’’ configuration. The results are compared with three-nucleon calculations based on the Paris potential and the new Bonn potential. The agreement within the experimental uncertainties of 8% puts an upper limit to the combined corrections due to relativistic effects, on-shell two-nucleon uncertainties, and the three-nucleon force.

• Received 18 April 1988

DOI:https://doi.org/10.1103/PhysRevC.39.2133