Electromagnetic strength of neutron and proton single-particle halo nuclei
| dc.creator | Typel, S. | |
| dc.creator | Baur, G. | |
| dc.date | 2004-11-17 | |
| dc.date | 2005-06-07 | |
| dc.date.accessioned | 2026-07-07T05:40:43Z | |
| dc.date.available | 2026-07-07T05:40:43Z | |
| dc.description | 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 and final states. The sensitivity to the final-state interaction (FSI) between the nucleon and the core can be studied systematically by varying the strength of the interaction in the continuum. In the case of neutron+core nuclei analytical results for the reduced transition probabilities are obtained by introducing the effective-range expansion. The scaling with the relevant parameters is found explicitly. General trends are observed by studying several examples of neutron+core and proton+core nuclei in a single-particle model assuming Woods-Saxon potentials. Many important features of the neutron halo case can be obtained from a square-well model. Rather simple analytical formulas are found. The nucleon-core interaction in the continuum affects the determination of astrophysical S factors at zero energy in the method of asymptotic normalisation coefficients (ANC). It is also relevant for the extrapolation of radiative capture cross sections to low energies. | |
| dc.description | 77 pages, 25 figures, 7 tables, accepted for publication in Nucl. Phys. A | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0411069 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0411069 | |
| dc.identifier | Nucl.Phys. A759 (2005) 247-308 | |
| dc.identifier | doi:10.1016/j.nuclphysa.2005.05.145 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/82339 | |
| dc.subject | Nuclear Theory | |
| dc.subject | Nuclear Experiment | |
| dc.title | Electromagnetic strength of neutron and proton single-particle halo nuclei | |
| dc.type | text |