Positron elastic scattering from alkaline earth targets

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dc.creatorLuis Argel Poveda Calviño
dc.creatorDenise da Costa Assafrão de Lima
dc.creatorJosé Rachid Mohallem
dc.date.accessioned2024-01-01T12:51:54Z
dc.date.accessioned2025-09-09T00:41:47Z
dc.date.available2024-01-01T12:51:54Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.identifier.doihttps://doi.org/10.1140/epjd/e2016-70120-y
dc.identifier.issn1434-6079
dc.identifier.urihttps://hdl.handle.net/1843/62220
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofThe European Physical Journal D
dc.rightsAcesso Restrito
dc.subjectPositrons
dc.subject.otherPositron scattering
dc.titlePositron elastic scattering from alkaline earth targets
dc.typeArtigo de periódico
local.citation.epage7
local.citation.issue7
local.citation.spage1
local.citation.volume70
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-9120-453X
local.identifier.orcidhttps://orcid.org/0000-0002-4776-4417
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1140/epjd/e2016-70120-y

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