Molecular and cluster structures in 18 O

نویسندگان

  • W. von Oertzen
  • T. Dorsch
  • H. G. Bohlen
  • R. Krücken
  • T. Faestermann
  • R. Hertenberger
  • Tz. Kokalova
  • M. Mahgoub
  • M. Milin
  • C. Wheldon
  • H. - F. Wirth
چکیده

We have studied the multi-nucleon transfer reaction 12 C(7 Li,p) at E lab = 44 MeV, populating states in the oxygen isotope 18 O. The experiments were performed at the Tandem accelerator of the Maier-Leibniz Laboratory in Munich using the high-resolution Q3D magnetic spectrograph. States were populated up to an excitation energy of 21.2 MeV with an overall energy resolution of 45 keV, and 30 new states of 18 O have been identified. The structure of the rotational bands observed is discussed in terms of cluster bands with the underlying cluster structures: 14 C ⊗ α and 12 C ⊗ 2n ⊗ α. Because of the broken intrinsic reflection symmetry in these structures the corresponding rotational bands appear as parity doublets.

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تاریخ انتشار 2009