Abstract
Abstract The three-body break-up of the five-nucleon system 3 He+d has been investigated through the reactions 3 He + d → 3 He + n + p and 3 He + d → 3 H + 2 p . In both cases the mass-3 particle and a proton were detected in a kinematically complete experiment for a deuteron bombarding energy of 10.92 MeV. A 3 He gas target in a small gas cell was used. Particle identification of the mass-3 particle was done with a three-detector d E /d x — E telescope. The data show the presence of nucleon-nucleon final-state interactions as well as those leading to excited states of the mass-4 system. The extraction of nucleon-nucleon scattering lengths and the effect of the excited mass-4 states are discussed.
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