Author:
Rodríguez-Sánchez J L,Benlliure J,Haettner E,Scheidenberger C,Vargas J,Ayyad Y,Alvarez-Pol H,Atkinson J,Aumann T,Beceiro-Novo S,Boretzky K,Caamaño M,Casarejos E,Cortina-Gil D,Fernández P Díaz,Estrade A,Geissel H,Itahashi K,Kelić-Heil A,Lenske H,Litvinov Yu A,Paradela C,Pérez-Loureiro D,Pietri S,Prochazka A,Saito T R,Takechi M,Tanaka Y K,Vidaña I,Weick H,Winfield J S
Abstract
Abstract
Isobaric charge-exchange reactions induced by beams of 112Sn have been investigated at the GSI facility using the fragment separator FRS. The high-resolving power of this spectrometer makes it possible to obtain the isobaric charge-exchange cross sections with an uncertainty of 3.5% and to separate quasi-elastic and inelastic contributions in the missing-energy spectra, in which the inelastic component is associated to the in-medium excitation of baryonic resonances such as the Δ resonance. We report on the results obtained for the (p,n) channel excited by using different targets that cover a large range in neutron excess. In addition, we also compare the missing-energy spectra with an intranuclear cascade model coupled to a de-excitation code to investigate the in-medium effects in the production of baryonic resonances.
Subject
General Physics and Astronomy