Nuclear halo structure from quasielastic charge-exchange reactions
Author | dc.contributor.author | Arellano Sepúlveda, Hugo | |
Author | dc.contributor.author | Love, W. G. | es_CL |
Admission date | dc.date.accessioned | 2007-05-17T21:25:46Z | |
Available date | dc.date.available | 2007-05-17T21:25:46Z | |
Publication date | dc.date.issued | 2005-06-13 | |
Cita de ítem | dc.identifier.citation | NUCLEAR PHYSICS A 755: 527C-530C JUN 13 2005 | en |
Identifier | dc.identifier.issn | 0375-9474 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/124587 | |
Abstract | dc.description.abstract | Neutron and proton densities in the nuclear periphery are investigated within (p,n) charge-exchange isobar transitions. For this purpose we have developed parameter-free optical potentials (1)) with a detailed treatment of the in-medium t tau part of the effective interaction. Non local coupled-channel Lane equations are solved to obtain the scattering observables. The use of conventional proton and neutron densities significantly underestimates Fermi (forward-angle) cross-sections in agreement with findings by various other groups. However, we have found model-independent densities which provide a remarkable improvement in the description of the quasielastic scattering data. The densities obtained are consistent with recent measurements at CERN in studies of the neutron-to-proton halo factor f(r)=Z rho(n)/N rho(p) with antiprotons (2)). These findings provide an alternative way to investigate the nuclear periphery, and may also help to solve the long-standing puzzle of the underestimated Fermi cross section in (p,n) charge-exchange phenomena. | en |
Lenguage | dc.language.iso | en | en |
Publisher | dc.publisher | ELSEVIER SCIENCE BV | en |
Título | dc.title | Nuclear halo structure from quasielastic charge-exchange reactions | en |
Document type | dc.type | Artículo de revista |
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