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dc.contributor.authorAlmansa, Ivanessa da Silveirapt_BR
dc.contributor.authorBurton, David A.pt_BR
dc.contributor.authorCairns, R.A.pt_BR
dc.contributor.authorMarini, Samuelpt_BR
dc.contributor.authorPeter, Eduardo Alcidespt_BR
dc.contributor.authorRizzato, Felipe Barbedopt_BR
dc.contributor.authorRussman, Felipe Boffpt_BR
dc.date.accessioned2020-01-14T04:15:28Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1070-664Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/204117pt_BR
dc.description.abstractSpatially modulated electrostatic fields can be designed to efficiently accelerate particles by exploring the relationships between the amplitude, the phase velocity, the shape of the potential, and the initial velocity of the particle. The acceleration process occurs when the value of the velocity excursions of the particle surpasses the phase velocity of the carrier, as a resonant mechanism. The ponderomotive approximation based on the Lagrangian average is usually applied in this kind of system in non-accelerating regimes. The mean dynamics of the particle is well described by this approximation far from resonance. However, the approximation fails to predict some interesting features of the model near resonance, such as the uphill acceleration phenomenon. A canonical perturbation theory is more accurate in these conditions. In this work, we compare the results from the Lagrangian average and from a canonical perturbation theory, focusing in regions where the results of these two approaches differ from each other.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics of plasmas. Melville. Vol. 25, no. 11 (Nov. 2018), 113107, 6 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectSimulação numéricapt_BR
dc.subjectOndas eletrostáticaspt_BR
dc.titleUphill acceleration in a spatially modulated electrostatic field particle acceleratorpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001109683pt_BR
dc.type.originEstrangeiropt_BR


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