Resonances in 11C observed in the 4He(7Be, alpha)7Be and 4He(7Be, p)10B reactions

Freer, M. and Achouri, N. L. and Angulo, C. and Ashwood, N. I. and Bardayan, D. W. and Brown, S. and Catford, W. N. and Chipps, K. A. and Curtis, N. and Demaret, P. and Harlin, C. and Laurent, B. and Malcolm, J. D. and Milin, Matko and Munoz-Britton, T. and Orr, N. A. and Pain, S. D. and Price, D. and Raabe, R. and Soić, Neven and Thomas, J. S. and Wheldon, C. and Wilson, G. and Ziman, V. A. (2012) Resonances in 11C observed in the 4He(7Be, alpha)7Be and 4He(7Be, p)10B reactions. Physical Review C, 85 (1). pp. 14304-7. ISSN 0556-2813

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Abstract

Measurements of the 4He(7Be, α)7Be and 4He(7Be, p)10B reactions were performed using 7Be beam energies of 7.1 and 23 MeV and a helium-4 target, employing the thick target technique. Resonances were observed between Ex(11C)=8.6 to 13.8 MeV. An R-matrix analysis was performed to characterize the spins and partial widths. This analysis showed that the observed sequence of states was consistent with that found for 7Li + α resonant scattering populating resonances in 11B. A comparison of the proposed partial widths for decay with the Wigner limit indicates that several of the states are associated with cluster-like structures.

Item Type: Article
Keywords: resonant scattering, R-matrix analysis, 11C, cluster structure
Date: January 2012
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 098-1191005-2890
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 11 Jul 2014 07:44
Last Modified: 23 Feb 2016 16:44
URI: http://digre.pmf.unizg.hr/id/eprint/2176

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