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Helium clustering in neutron-rich Be isotopes |
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| Affiliation: | a School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom b Laboratoire de Physique Corpusculaire, ISMRA and Université de Caen, IN2P3-CNRS, 14050, Caen Cedex, France c Université Libre de Bruxelles, CP 226, B-1050, Bruxelles, Belgium d School of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom e Institut de Recherches Subatomique, IN2P3-CNRS/Université Louis Pasteur, BP 28, 67037, Strasbourg Cedex, France f Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom g Department of Electronic Engineering and Physics, University of Paisley, Paisley, PA1 2BE, United Kingdom h CLRC Daresbury Laboratory, Daresbury, Warrington, Cheshire, WA4 4AD, United Kingdom i Institut de Physique, Université Catholique de Louvain, Louvain-la-Neuve, Belgium j Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia k Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, 44-95123, Catania, Italy |
| Abstract: | Measurements of the helium-cluster breakup and neutron removal cross-sections for neutron-rich Be isotopes 10–12,14Be are presented. These have been studied in the 30 to 42 MeV/nucleon energy range where reaction measurements are proposed to be sensitive to the cluster content of the ground-state wave-function. These measurements provide a comprehensive survey of the decay processes of the Be isotopes by which the valence neutrons are removed revealing the underlying – core-cluster structure. The measurements indicate that clustering in the Be isotopes remains important up to the drip-line nucleus 14Be and that the dominant helium-cluster structure in the neutron-rich Be isotopes corresponds to –Xn–. |
| Keywords: | Clustering Breakup Knockout Cross-sections Anti-symmetrized Molecular Dynamics Beryllium |
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