Excited states in the neutron-rich nucleus 25F

Vajta, Zsolt and Stanoiu, M. and Kunné Sohler, Dorottya and Jansen, G. R. and Azaiez, F. and Dombrádi, Zsolt and Sorlin, O. and Brown, B. A. and Belleguic, M. and Borcea, C. and Bourgeois, C. and Dlouhy, Z. and Elekes, Zoltán and Fülöp, Zsolt and Grévy, S. and Guillemaud-Mueller, D. and Hagen, G. and Hjorth-Jensen, M. and Ibrahim, F. and Kerek, A. and Krasznahorkay, Attila and Lewitowicz, M. and Lukyanov, S. M. and Mandal, S. and Mayet, P. and Mrázek, J. and Negoita, F. and Penionzhkevich, Y. -E. and Podolyák, Zsolt and Roussel-Chomaz, P. and Timár, János (2014) Excited states in the neutron-rich nucleus 25F. PHYSICAL REVIEW C, 89 (5). ISSN 2469-9985

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Abstract

The structure of the nucleus 925F was investigated through in-beam γ-ray spectroscopy of the fragmentation of Ne26 and Na27,28 ion beams. Based on the particle-γ and particle-γγ coincidence data, a level scheme was constructed and compared with shell model and coupled-cluster calculations. Some of the observed states were interpreted as quasi-single-particle states built on top of the closed-shell nucleus O24, while the others were described as states arising from coupling of a single proton to the 2+ core excitation of O24.

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