States in 17O excited in the 13C + 9Be → 13C + 2α + n reaction at 90 MeV

The 13 C + 9 Be reactions have been measured using a 13 C beam with an incident energy of 90 MeV. The 17 O excitation energy spectra have been reconstructed from the detected 13 C + α coincidences. A number of the 17 O states has been observed and their structure has been discussed in relation to the well-known 16 0 cluster states.