Abstract
The data set of the direct reactions induced by the radioactive nuclei 6, 8He can be used as benchmarks to test the validity of the microscopic structure theories. The reactions were analyzed and compared to microscopic calculations including various structure inputs. The interpretation for the structure of He isotopes is compared to the ones proposed via other probes. The consistency of the various data sets and of the reaction analysis using structure models is discussed. The root mean square radii of the matter and neutron densities, and the multipole moments M p, n and B(E2) values are extracted in our approach and compared to the previous experiments and to the theories. From this comparison, we can discuss and point out the microscopic inputs of the models (like correlations, continuum-coupling effects), which are required to reach a consistent understanding for both the radii and the spectroscopy of the nuclei close to the drip-line.
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Communicated by U.-G. Meißner
Dr. Hab. Valérie Lapoux is a nuclear physicist working at CEA Saclay in the field of the direct nuclear reactions induced by radioactive beams. Most of her experimental works have been done since 2001 at the GANIL facility using the MUST2 array (must2.cea.fr) and also, since 2010, at RIKEN. Her works are focused on the interpretations of the reaction observables of the exotic unstable nuclei, in collaboration with theorists gathered in the framework of the ESNT laboratory (esnt.cea.fr), to obtain insight onto the nuclear forces at play to produce the fascinating structure properties of the atomic nucleus.
Dr. Nicolas Alamanos is Research Director at CEA Saclay. He has been Director of the Saclay Nuclear Physics Division and President of GANIL’s Scientific Council. He is currently Deputy Director of the Institute of Research into the Fundamental Laws of the Universe (IRFU). He is a member of GANIL’s Directorate committee, of GANIL/SPIRAL2 Scientific Council, Chairperson of the International Advisory Committee of the Institute of Nuclear and Particle Physics of “Demokritos”, Scientific counselor of the European program “CEA-Euro talents”, Secretary of the Joint (DSM-IN2P3) committee CCT-PNHE, Chairperson of the governing board of the European project “CHANDA”, CEA representative member of (NuPECC). He is a member or evaluator of many committees—ANR (France), ARISTEIA (GRECE), FRS-FNRS (Belgium), STFC (England). He is a Member of many bilateral coordination committees, various steering, or In-Kind committees. From January 2013 he has been nominated Editor-in-Chief of the European Physical Journal A for the experimental physics section and Managing Reviews Editor for the experimental physics section. He is also the Editor of the Scholarpedia Encyclopedia of Nuclear Physics. Since 2009 He is a member of the GSI-GENCO community.
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Lapoux, V., Alamanos, N. Weakly bound Borromean structures of the exotic 6,8He nuclei through direct reactions on proton. Eur. Phys. J. A 51, 91 (2015). https://doi.org/10.1140/epja/i2015-15091-2
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DOI: https://doi.org/10.1140/epja/i2015-15091-2