Knockout and charge-exchange reactions from relativistic carbon beams

Cross-sections of one- and two-nucleon knockout reactions as well as charge-exchange reactions from relativistic proton-rich carbon beams obtained during experiment S341 at the fragment separator FRS at GSI are presented. In one-nucleon knockout a reduction of the spectroscopic factors extracted from these reactions with increasing binding energy of the removed nucleon is corroborated. Two-neutron and two-proton knockout reactions from 11C have been compared with each other, and in charge-exchange reactions we observe the excitation of the Δ resonance. Beams of 9,10,11,12C were produced in fragmentation reactions. The secondary beam impinged on a beryllium target at the second focus (S2) of the FRS. To maximize transmission, the reaction residues were measured at the third focus (S3) of the FRS.