Nuclear break-up of 11Be

Abstract

The break-up of 11Be was studied at 41 AMeV using a secondary beam of 11Be from the GANIL facility on a 48Ti target by measuring correlations between the 10Be core, the emitted neutrons and gamma rays. The nuclear break-up leading to the emission of a neutron at large angle in the laboratory frame is identified with the “towing mode” through its characteristic n-fragment correlation. The experimental spectra are compared with a model where the time dependent Schrödinger equation (TDSE) is solved for the neutron initially in the 11Be. A good agreement is found between experiment and theory for the shapes of neutron experimental energies and angular distributions. The spectroscopic factor of the 2 s orbital is tentatively extracted to be 0.46 ± 0.15 . The neutron emission from the 1 p and 1 d orbitals is also studied.