Reaction mechanisms in the scattering of 8 Li on 208 Pb around the Coulomb barrier
|Author/s||Moro Muñoz, Antonio Matías
García Martínez, H.
Aguilera, E. F.
Martínez Quiroz, E.
Gómez Camacho, Joaquín José
Nunes, Filomena M.
|Department||Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear|
|Abstract||We present an analysis of the reaction
which has been recently measured at energies around the Coulomb barrier. The study is focused on the elastic and one-neutron removal channels. The elastic ...
We present an analysis of the reaction 8 Li + 208 Pb , which has been recently measured at energies around the Coulomb barrier. The study is focused on the elastic and one-neutron removal channels. The elastic angular distribution has been analyzed by means of the optical model and coupled-channels method. The measured 7 Li yield has been assumed to come from the one-neutron transfer reaction 208 Pb ( 8 Li , 7 Li ) 209 Pb and the breakup reaction 8 Li + 208 Pb → n + 7 Li + 208 Pb . For the former, an analysis in terms of the distorted wave Born approximation and coupled-channels Born approximation (CCBA) methods has been performed. For the breakup reaction, a generalization of the CCBA method has been used, in which the final states are described as n + 208 Pb continuum states. Transfer and breakup are then treated consistently. The summed angular distribution for the two processes reproduces the shape and absolute magnitude of the measured 7 Li distribution. We conclude that most of the measured 7 Li yield comes from the one-neutron transfer channel. We also show that the elastic scattering is notably affected by the strong coupling to transfer channels.
|Funding agencies||Fundaçao para a Ciência e a Tecnología (FCT). Portugal
Ministerio de Ciencia Y Tecnología (MCYT). España
|Citation||Moro Muñoz, A.M., Crespo, R., García Martínez, H., Aguilera, E.F., Martínez Quiroz, E., Gómez Camacho, J.J. y Nunes, F.M. (2003). Reaction mechanisms in the scattering of 8 Li on 208 Pb around the Coulomb barrier. Physics Letters C, 68, 034614.|