Structure studies of neutron-rich beryllium and carbon isotopes |
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Authors: | H. G. Bohlen W. von Oertzen R. Kalpakchieva B. Gebauer S. M. Grimes T. N. Massey H. Lenske A. Lenz M. Milin Ch. Schulz T. Kokalova S. Torilov S. Thummerer |
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Affiliation: | 1. Hahn-Meitner-Institut GmbH, Glienicker Str. 100, 14109, Berlin, Germany 3. Flerov Laboratory of Nuclear Reactions, JINR, 141980, Dubna, Russia 5. Department of Physics and Astronomy, Ohio University, 45701-2979, Athens, Ohio, USA 6. Institut für Theoretische Physik, Universit?t Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
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Abstract: | The structure of neutron-rich beryllium isotopes has been investigated using different heavy-ion induced transfer reactions. A strong sensitivity to the chosen core nucleus is found for the cores of 9Be and 10Be, respectively. With a 9Be core, molecular rotational bands up to high excitation energies are observed due to the pronounced 2α-cluster structure, whereas only few states at low excitation energies are populated with a 10Be core. For 11Be a detailed investigation has been performed for the three states at 3.41 MeV, 3.89 MeV and 3.96 MeV, which resulted in the most probable spin-parity assignments 3/2+, 5/2? and 3/2?, respectively. Furthermore we have studied particlehole states of 16C using the 13C(12C,9C)16C reaction and found 14 previously unknown states. |
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