Cluster breakup of 18O and 22Ne

Nicholas Ashwood, Martin Freer, Saher Ahmed, Norman Clarke, Neil Curtis, Paul McEwan, Carl Metelko, N Soic, Victor Ziman

Research output: Contribution to journalArticle

22 Citations (Scopus)


The C-14 + alpha breakup of O-18 has been studied at energies of E-beam = 136 MeV and 148.5 MeV, using a 200 mu g cm(-2) thick Be target. Several states belonging to the proposed octupole deformed band, previously associated with the 8.04 MeV, l(-) and 8.22 MeV, 2(+) states, have been populated through inelastic excitation. A candidate for the 7(-) member was not found, providing evidence that the negative parity component of the band terminates at the 5(-) member. This is shown to be consistent with the Nilsson description of the systematics in the O-16, O-18 and Ne-20 nuclei. In addition, several states at E-x > 13 MeV in O-18 have been measured to alpha -decay for the first time. The a-transfer reactions Be-9(O-18, C-12 Be-10)He-5, Be-9(O-18, C-13 Be-9)He-5 and Be-9(O-18, O-11 He-4)He-5 were also measured; however, little or no evidence for the population of states in Ne-22 was found.
Original languageEnglish
Pages (from-to)463-474
Number of pages12
JournalJournal of Physics G: Nuclear and Particle Physics
Publication statusPublished - 1 Apr 2006


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