منابع مشابه
Probing Halo and Molecular States in Light, Neutron-rich Nuclei
Until relatively recently cluster studies have been confined to the region encompassing the line of beta stability. As clustering is expected to manifest itself most strongly near thresholds, exotic structures might be expected to form in the more weakly bound systems found in the vicinity of the driplines. Perhaps the most striking example of this are the halo nuclei. In the present paper two ...
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We investigate higher order effects in electromagnetic excitation of neutron halo nuclei using a simple and realistic zero range model for the neutroncore interaction. In the sudden (or Glauber) approximation all orders in the target-core electromagnetic interaction are taken into account. Small deviations from the sudden approximation are readily calculated. We obtain very simple analytical re...
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Using a three-body model with density-dependent contact interaction, we discuss the root mean square distance between the two valence neutrons in Li nuclues as a function of the center of mass of the neutrons relative to the core nucleus Li. We show that the mean distance takes a pronounced minimum around the surface of the nucleus, indicating a strong surface di-neutron correlation. We demonst...
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Electromagnetic strength functions of halo nuclei exhibit universal features that can be described in terms of characteristic scale parameters. For a nucleus with nucleon+core structure the reduced transition probability, as determined, e.g., by Coulomb dissociation experiments, shows a typical shape that depends on the nucleon separation energy and the orbital angular momenta in the initial an...
متن کاملEfimov states in halo nuclei.
We investigate conditions for the occurrence of E mov states in the recently discovered halo nuclei. These states could appear in systems, where one neutron is added to a pronounced one-neutron halo nucleus. Detailed calculations of the properties of the states are presented and promising candidates are discussed. PACS numbers: 21.10.Gv, 21.45.+v Introduction. The E mov e ect was discovered the...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2005
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/20/1/039