Structures in 20O from the 14C(7Li, p) reaction at 44 MeV

We have studied the multi-nucleon transfer reaction 14 C(7 Li, p) at E Lab(7 Li) = 44 MeV populating states of the neutron-rich oxygen isotope 20O . The experiments have been performed at the Munich Tandem accelerator using the high-resolution Q3D magnetic spectrometer, with an overall energy resolution of 45keV. States were populated up to 20MeV excitation energy --65 states have been identified in the analysis, among which 42 are new. Rotational bands are proposed in terms of underlying intrinsic reflection-asymmetric cluster and prolate molecular structures (namely \(\ensuremath ^{14}{\rm C}\otimes2n\otimes\alpha\) as parity doublet bands. A rectangular oblate structure is suggested for some very narrow states at high excitation energies.