Abstract
A kinetically complete measurement of the (, ) and (, ) reactions has been performed at a beam energy of 30 MeV/nucleon. The charged beam velocity particles were detected in an array of Si-CsI detectors placed at zero degrees, and the neutrons in an 81-element neutron array. The coincident detection of the final-state particles, produced in the breakup of , allowed the reconstruction of the excitation energy in the and systems. States in were identified, in particular the ground and first-excited states; and in , states at 1.68, 2.43, and (2.78, 3.05) MeV were observed. The population of these levels, in particular the 2.43 MeV level, suggests that collective excitations play an important role in the neutron removal process. Distorted wave Born approximation and Glauber-type calculations have been used to model the direct neutron removal from the ground state and the two-step removal via inelastic excitations of the (2) and excited states.
- Received 18 March 2005
DOI:https://doi.org/10.1103/PhysRevC.72.024314
©2005 American Physical Society