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Properties of resonances in 12C above the triple-alpha threshold

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, , Citation M Alcorta et al 2011 J. Phys.: Conf. Ser. 312 092013 DOI 10.1088/1742-6596/312/9/092013

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1 Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, Madrid E-28006, Spain

2 Department of Physics and Astronomy, Aarhus University, Denmark

3 PH Department, CERN, CH-1211 Geneve, Switzerland

4 Department of Physics, University of York Heslington, UK

5 Fundamental Physics, Chalmers University of Technology, Gothenburg, Sweden

6 CMAM, Universidad Autonoma de Madrid, Cantoblanco, Spain

7 Present address: Argonne National Laboratory, 9700 S Cass Ave, Argonne, Illinois 60439, USA

8 Present address: Department of Physics, University of York Heslington, UK

9 Present address: Univ Complutense, Grp Fis Nucl, E-28040 Madrid, Spain

10 Present address: Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal

11 Present address: PH Department, CERN, CH?1211 Geneve, Switzerland

12 Present address: Univ Tennessee, Department Phys & Astron, Knoxville, TN 37996 USA

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1742-6596/312/9/092013

Abstract

A complete kinematics study of the 10B(3He,pααα) and the 11B(3He,dααα) reactions has been performed to study the multi-particle break-up of 12C resonances above the triple-alpha threshold. The values of energy and widths of some states has been improved, and in states of natural parity partial branches of decay through the ground state of 8Be have been extracted. The influence of the "ghost" of the 8Be ground state has been taken into account in order to clarify the partial branches.

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10.1088/1742-6596/312/9/092013