Probing the nuclear structure of 8B and 19C

The nuclei 8B and 19C were investigated in breakupreactions at relativistic energies. The fragment separator FRS at GSI was used as an energy-loss spectrometer to measure the longitudinal momentumdistributions of the breakupfragments after one-nucleon removal. For the case of 8B, the measured momentumdistribution is in agreement with our previous experiment, but in this measurement the momentumrange extends up to 175 MeV/c in the projectileframe. For 18C fragments from the breakupof 19C, we extract a much larger momentumwidth than the value obtained in a measurement at lower projectileenergies.