Pandit, S. K.; Jha, V.; Mahata, K.; Santra, S.; Palshetkar, C. S.; Ramachandran, K.; Parkar, V. V.; Shrivastava, A.; Kumawat, H.; Roy, B. J.; Chatterjee, A.; Kailas, S.
Source
Physical Review-C, 2011. Vol. 84 (3): pp. 031601.1-031601.5
ABSTRACT
The cluster structure of 9Be has been investigated through high precision elastic scattering cross-section measurements of a 9Be + 208Pb system at below barrier energies, E = 24–34 MeV. The observed deviation from the Rutherford scattering can only be explained by an n + 8Be cluster description of 9Be, whereas the α + 5He cluster picture fails to explain the measured data, indicating the dominance of the n + 8Be cluster structure of 9Be. In addition to sequential and direct breakup, the coupling effect of one neutron stripping on elastic scattering is significant even at 10 MeV below the barrier. The sensitivity of the high precision elastic scattering data to the cluster structure of 9Be has been demonstrated.