Abstract
The angular distributions of differential cross sections of elastic and inelastic scattering populating the ground and excited states in up to 15 MeV excitation energy are precisely measured for the first time at an incident energy of MeV to study the effect of repulsive three-body forces. Using the high-resolution spectrometer Grand Raiden at the Research Center for Nuclear Physics (RCNP), Osaka University, we have obtained the differential cross sections for the ground state () and 4.44 MeV () excited state, as well as the summed differential cross sections for the states between 4.44 and 15 MeV in the angular range of . The results are compared with microscopic coupled-channel calculations. The potential between the colliding nuclei is determined by the double folding method with three different complex -matrix interactions, the ESC, CEG07b, and MPa interactions. The CEG07b and MPa interactions, which include repulsive three-body forces, describe the data well, whereas the ESC interaction, which does not include repulsive three-body forces, fails to reproduce the data. The results provide evidence of repulsive three-body forces in and demonstrate the possible sensitivity of elastic scattering to three-body forces.
8 More- Received 22 August 2016
- Revised 3 February 2017
DOI:https://doi.org/10.1103/PhysRevC.95.044616
©2017 American Physical Society