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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/64085
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dc.creatorPaulo Henrique Ribeiro Amaralpt_BR
dc.creatorJosé Rachid Mohallempt_BR
dc.date.accessioned2024-02-16T18:00:23Z-
dc.date.available2024-02-16T18:00:23Z-
dc.date.issued2021-
dc.citation.volume104pt_BR
dc.citation.issue4pt_BR
dc.citation.spage042808-1pt_BR
dc.citation.epage042808-9pt_BR
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.104.042808pt_BR
dc.identifier.issn2469-9934pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/64085-
dc.description.resumoSystematic theoretical data of positron binding to atoms [C. Harabati, V. A. Dzuba, and V. V. Flambaum, Phys. Rev. A 89, 022517 (2014)] are handled by machine learning techniques. Despite the existence of unsystematic errors in the calculations, it becomes possible to identify, through bound-unbound classification, a descriptor as a function of just the polarizability and ionization potential of the isolated atoms. Details of the bonding mechanism appear to be less relevant and the binding seems to be described by simply these two atomic properties, with large predominance of the polarizability. The descriptor is shown to be useful in the discrimination of binding energies of atoms with approximately equal polarizabilities as well as to correct some possibly wrong energy data. Identified arguably wrong cases are withdrawn from the data set so that an adjusted simple relation for the binding energy as a function of the descriptor is obtained, allowing corrections and predictions of binding energies extended to atoms up to Rf (104), except lanthanides and actinides.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_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.ispartofPhysical Review A-
dc.rightsAcesso Restritopt_BR
dc.subjectMolecular structurept_BR
dc.subjectAtomic structurept_BR
dc.subject.otherEstrutura molecularpt_BR
dc.subject.otherEstrutura atômicapt_BR
dc.titleDescriptor for positron binding to atomspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.104.042808pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0799-4143pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4776-4417pt_BR
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