Light nuclei near neutron and proton drip lines in relativistic mean-field theory |
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| Institution: | 1. Physik Department, Technische Universität München, München, Germany;2. Physics Department, Kuwait University, Kuwait City 13060, Kuwait;3. Max Planck Institut für Astrophysik, D-85740 Garching bei München, Germany;4. Department of Theoretical Physics, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece;1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321, USA;2. Natural Sciences Department, La Guardia Community College, Long Island City, NY 11101, USA;3. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1321, USA;1. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria;2. Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, 41080 Sevilla, Spain;1. KU Leuven, Instituut voor Kern, en Stralingsfysica, BE-3001 Leuven, Belgium;2. EP Department, CERN, CH-1211 Geneva 23, Switzerland;3. School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom;1. Institute of Nuclear and Particle Physics, Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA;2. Joint Institute for Nuclear Astrophysics – Center for the Evolution of the Elements;3. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA;4. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;5. Grand Accélérateur National d′Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, Caen 14076, France;6. Institute for Applied Physics, Goethe University Frankfurt am Main, 60438 Frankfurt am Main, Germany;7. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;8. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA;1. China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China;2. Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;3. CENBG, CNRS/IN2P3 and Université de Bordeaux, Chemin du Solarium, 33175 Gradignan cedex, France;4. Institut de Physique Nucléaire, IN2P3/CNRS Université Paris-Sud Orsay 91406 Cedex, France;5. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China;6. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CNRS/IN2P3, Université Paris-Sud, Bât. 108, F-91405 Orsay Campus, France;1. College of Automation, Central South University, Changsha, Hunan, China;2. China Nuclear Power Operation Co., Ltd, China |
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| Abstract: | We have made a detailed study of the ground-state properties of nuclei in the light-mass region with atomic numbers Z = 10–22 in the framework of the relativistic mean-field (RMF) theory. The nonlinear σω model with scalar self-interaction has been employed. The RMF calculations have been performed in an axially deformed configuration using the force NL-SH. We have considered nuclei about the stability line as well as those close to proton and neutron drip lines. It is shown that the RMF results provide good agreement with the available empirical data. The RMF predictions also show reasonably good agreement with those of the mass models. It is observed that nuclei in this mass region are found to possess strong deformations and exhibit shape changes all along the isotopic chains. The phenomenon of shape coexistence is found to persist near the stability line as well as near the drip lines. It is shown that the magic number N = 28 is quenched strongly, thus enabling the corresponding nuclei to assume strong deformations. Nuclei near the neutron and proton drip lines in this region are also shown to be strongly deformed. |
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