Probing the 6,7Li nucleon densities through a new break-up process approach

• Published in: Nuclear physics. A Vol. 836; no. 1; pp. 1 - 10
• Main Authors: Sousa, D.P., Pereira, D., Lubian, J., Chamon, L.C., Oliveira, J.R.B., Rossi, E.S., Silva, C.P., de Faria, P.N., Guimarães, V., Lichtenthaler, R., Alvarez, M.A.G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-05-2010
• Subjects: 120Sn( 6Li, X); 120Sn( 7Li, X); deduced; elastic and quasi-elastic [formula omitted]; formula omitted; imaginary potential component; measured; nuclear densities; Nuclear reactions; optical model parameters; sensitivity radius; silicon barrier detectors; deduced; measured; Nuclear reactions
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2010.01.245

In this work we present a double folding optical model analysis of new near-barrier quasi-elastic experimental data for the
6,7Li +
120Sn systems. From the analysis, it was possible to confirm the ground-state nucleon densities assumed for the weakly bound
6,7Li isotopes. The apparent discrepancies between the experimental densities and those based on Dirac–Hartree–Fock–Bogoliubov (DHB) calculations were removed. A new approach that simulates the projectile break-up and a positive polarization from couplings of
6,7Li bound states with the continuum was considered in the reaction mechanism.