Background: One-nucleon removal reactions at or above the Fermi energy are important tools to explore the single-particle structure of exotic nuclei. Experimental data must be compared with calculations to extract structure information, evaluate correlation effects in nuclei, or determine reaction rates for nuclear astrophysics. However, there is insufficient knowledge to calculate the cross sections for these reactions accurately.

Purpose: We evaluate the contributions of the final-state interaction (FSI) and of the medium modifications of the nucleon-nucleon interactions and obtain the shapes and magnitudes of the momentum distributions. Such effects have been often neglected in the literature.

Method: Calculations for reactions at energies of 35–1000 MeV/nucleon are reported and compared to published data. For consistency, the state-of-the-art eikonal method for stripping and diffraction dissociation is used.

Results: We find that the two effects are important and their relative contributions vary with the energy and with the atomic and mass number of the projectile involved.

Conclusions: These two often neglected effects modify considerably the one-nucleon-removal cross sections. As expected, the effects are largest at lower energies, around 50 MeV/nucleon, and on heavy targets.

• Received 17 January 2012

DOI:https://doi.org/10.1103/PhysRevC.87.024607