Cluster structures of 18O and 20O up to 20 MeV excitation energy from the (7Li, p)-reaction

We studied the band structure of 18O and 20O using the (7Li, p)-reaction at an incident energy of 44 MeV on 12C and 14C targets. Spectra have been measured from the ground state up to 20 MeV excitation energy. We found 27 and 38 new states for 18O and 20O, respectively. The even-parity bands have been analysed up to now, i.e., some bands were extended by further members. The 0+ band head of the molecular band in 18O at 7.796(5) MeV was identified for the first time.