The 10B+d→ α+ α+ α reaction

Abstract

The reaction 10B+d→ α+ α+ α is studied at deuteron bombarding energy of 0.40 MeV with the 12C compound nucleus formed at an excitation around the 25 MeV giant resonance. Two of the α-particles in the final state are detected in coincidence by two solid-state detectors. For the presentation of the experimental data, a new method has been employed. The reaction mechanism is found to be sequential two-body decay involving the 0 + ground state and the 2 +, 2.9 MeV first excited state of 8Be. Contributions from simultaneous decay in three alphas or other energetically possible excited states of 8Be up to 17 MeV are not present in the experimental results. The triple differential cross-section d 3σ dS dΩ 1 dΩ 2 is measured.