Close-coupling scattering cross sections and a model for positron cooling in a buffer gas of molecular nitrogen

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dc.creatorLuis Argel Poveda Calviño
dc.creatorDenise da Costa Assafrão de Lima
dc.creatorJenifer Geribola Pinheiro
dc.creatorJosé Rachid Mohallem
dc.date.accessioned2024-02-16T15:16:08Z
dc.date.accessioned2025-09-09T00:08:58Z
dc.date.available2024-02-16T15:16:08Z
dc.date.issued2019
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.100.062706
dc.identifier.issn2469-9934
dc.identifier.urihttps://hdl.handle.net/1843/64018
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review A
dc.rightsAcesso Restrito
dc.subjectPositrons
dc.subject.otherPositronium
dc.titleClose-coupling scattering cross sections and a model for positron cooling in a buffer gas of molecular nitrogen
dc.typeArtigo de periódico
local.citation.epage062706-10
local.citation.issue6
local.citation.spage062706-1
local.citation.volume100
local.description.resumoCross sections for positron scattering from molecular nitrogen are reported for energies below the positronium formation threshold. The elastic and state-to-state rotational and vibrational cross sections were obtained within the close-coupling formalism, using a three-dimensional potential energy surface for the interaction of the system. The inelastic cross sections was involved in a kinetic model to describe recent experimental results about positron cooling in a buffer gas of molecular nitrogen. Unlike a previous model [M. R. Natisin et al., J. Phys. B 47, 225209 (2014)], our prediction attributes a leading role to the 0→1 vibrational excitation of N2.
local.identifier.orcidhttps://orcid.org/0000-0002-9120-453X
local.identifier.orcidhttps://orcid.org/0000-0001-5465-0154
local.identifier.orcidhttps://orcid.org/0000-0003-0078-6149
local.identifier.orcidhttps://orcid.org/0000-0002-4776-4417
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.100.062706

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