States of C-14 and C-15 via the (O-18,O-16) two-neutron transfer reaction at 84 MeV

A study of the C-14 and C-15 states was pursued at the Catania INFN-LNS laboratory by the C-12(O-18,O-16)C-14 and C-13(O-18,O-16)C-15 reactions at 84 MeV incident energy. The O-16 ejectiles were detected at forward angles by the MAGNEX magnetic spectrometer. Exploiting the large momentum acceptance (20%) and solid angle (50 msr) of the spectrometer, energy spectra were obtained with a relevant yield up to 20 MeV excitation energy. The application of the powerful trajectory reconstruction technique did allow to get energy spectra and angular distributions with resolution of about 160 keV and 0.3 degrees. In the energy spectra several known low lying states of C-14 and C-15 have been observed and some unknown resonant structures at about 10.5 and 13.6 MeV in C-15 and 16 MeV in C-14 appear.