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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/62220
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dc.creatorLuis Argel Poveda Calviñopt_BR
dc.creatorDenise da Costa Assafrão de Limapt_BR
dc.creatorJosé Rachid Mohallempt_BR
dc.date.accessioned2024-01-01T12:51:54Z-
dc.date.available2024-01-01T12:51:54Z-
dc.date.issued2016-
dc.citation.volume70pt_BR
dc.citation.issue7pt_BR
dc.citation.spage1pt_BR
dc.citation.epage7pt_BR
dc.identifier.doihttps://doi.org/10.1140/epjd/e2016-70120-ypt_BR
dc.identifier.issn1434-6079pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/62220-
dc.description.resumoA previously reported model potential approach [Poveda et al., Phys. Rev. A 87, 052702 (2013)] was extended to study low energy positron elastic scattering from beryllium and magnesium. The cross sections were computed for energies ranging from 10-5 eV up to well above the positronium formation threshold. The present results are in good agreement with previous reports, including the prediction of a p-wave resonance in the cross section for magnesium. The emergence of this shape resonance is connected to a trend observed in the evolution of the partial wave cross section in going from Be to Mg target. This trend lead us to speculate that a sharp d-wave resonance should be observed in positron elastic scattering from calcium. The positron-target binding energies are investigated in detail, both using the scattering information and by direct computation of the bound state energies using the model potentials.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofThe European Physical Journal D-
dc.rightsAcesso Restritopt_BR
dc.subjectPositron scatteringpt_BR
dc.subject.otherPositronspt_BR
dc.titlePositron elastic scattering from alkaline earth targetspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://link.springer.com/article/10.1140/epjd/e2016-70120-ypt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9120-453Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4776-4417pt_BR
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