2010/09/24 by P. Mohr, P. N. de Faria, R. Lichtenthäler +10 · 1 citation
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Chemistry #Crystallography #Halo #High-pressure geophysics and materials #Nuclear Physics and Applications #Nuclear physics research studies #Particle physics #Physics #Quantum mechanics #Scattering #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.82.044606
published as Phys.Rev.C82:044606,2010 · 13 pages, 7 figures, accepted for publication in Phys. Rev. C
arxiv created 2010/09/24 · openalex publication_date 2010/10/08 · arxiv updated 2011/11/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Cross sections of 120Sn(\ensuremathα,\ensuremathα)120Sn elastic scattering have been extracted from the \ensuremathα-particle-beam contamination of a recent 120Sn(6He,6He)120Sn experiment. Both reactions are analyzed using systematic double-folding potentials in the real part and smoothly varying Woods-Saxon potentials in the imaginary part. The potential extracted from the 120Sn(6He,6He)120Sn data may be used as the basis for the construction of a simple global 6He optical potential. The comparison of the 6He and \ensuremathα data shows that the halo nature of the 6He nucleus leads to a clear signature in the reflexion coefficients \ensuremathηL: The relevant angular momenta L with \ensuremathηL\ensuremath≫0 and \ensuremathηL\ensuremath≪1 are shifted to larger L with a broader distribution. This signature is not present in the \ensuremathα-scattering data and can thus be used as a new criterion for the definition of a halo nucleus.