Light exotic nuclei: A new explanation of halo |
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| Authors: | G S Anagnostatos C Politis A Vahlas J Giapitzakis A N Antonov M Avrigeanu |
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| Institution: | (1) Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria;(2) Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania;(3) Institute of Nuclear Physics, National Center for Scientific Research Demokritos, Aghia Paraskevi, Attiki, Greece |
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| Abstract: | The experimental Tanihata density distributions for both protons and neutrons in 6,8He are very well reproduced here without an increase of the 1p neutron orbital size. Instead, an internal collective rotation, due to the invalidity of the adiabatic approximation, leads to the same measurable increase in the radius and to a simultaneous decrease in the separation energy of the nucleons participating in this rotation. Further support of the approach presented is gained by the reproduction of the ground-state properties of 7–11Be and of the excited (particle and rotational) states of 11Be. |
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