Abstract
The 12C(18O,16O)14C and 13C(18O,16O)15C reactions have been explored at 84MeV incident energy and the ejectiles have been detected at forward angles by the MAGNEX spectrometer. Thanks to the peculiarities of MAGNEX and to the ray-reconstruction technique, high-resolution spectra up to 22MeV excitation energy and high-quality cross-section angular distributions have been obtained. In the region above the two-neutron emission threshold, unknown wide structures have been observed in both the 14C and 15C residual nuclei. A detailed analysis of such resonances identifies them as the long-searched Giant Pairing Vibration. These data represent the first experimental signature of it.
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