Vibrational excitation cross-section by positron impact: a wave-packet dynamics study

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dc.creatorLuis Argel Poveda Calviño
dc.creatorMárcio Teixeira do Nascimento Varella
dc.creatorJosé Rachid Mohallem
dc.date.accessioned2024-02-20T12:23:54Z
dc.date.accessioned2025-09-08T23:16:18Z
dc.date.available2024-02-20T12:23:54Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3390/atoms9030064
dc.identifier.issn2218-2004
dc.identifier.urihttps://hdl.handle.net/1843/64304
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofAtoms
dc.rightsAcesso Aberto
dc.subjectPositrons
dc.subject.otherPositron scattering
dc.subject.otherVibrational cross-section
dc.subject.otherWave-packet dynamics
dc.subject.otherPositron
dc.subject.otherModel potential
dc.subject.otherWave-packet propagation
dc.titleVibrational excitation cross-section by positron impact: a wave-packet dynamics study
dc.typeArtigo de periódico
local.citation.epage10
local.citation.issue3
local.citation.spage1
local.citation.volume9
local.description.resumoThe vibrational excitation cross-section of a diatomic molecule by positron impact is obtained using wave-packet propagation techniques. The dynamics study was carried on a two- dimensional potential energy surface, which couples a hydrogenlike harmonic oscillator to a positron via a spherically symmetric correlation polarization potential. The cross-section for the excitation of the first vibrational mode is in good agreement with previous reports. Our model suggests that a positron couples to the target vibration by responding instantly to an interaction potential, which depends on the target vibrational coordinate.
local.identifier.orcidhttps://orcid.org/0000-0002-9120-453X
local.identifier.orcidhttps://orcid.org/0000-0002-5812-0342
local.identifier.orcidhttps://orcid.org/0000-0002-4776-4417
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/2218-2004/9/3/64

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