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dc.contributor.authorFadanelli Filho, Raul Carlospt_BR
dc.contributor.authorDias, Johnny Ferrazpt_BR
dc.contributor.authorBehar, Monipt_BR
dc.date.accessioned2014-10-09T02:13:12Zpt_BR
dc.date.issued2008pt_BR
dc.identifier.issn1050-2947pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104312pt_BR
dc.description.abstractSi x-ray and backscattering yields have been measured as a function of the C⁺ and C₂⁺ entrance angle along the Si ‹100› channel in an energy interval between 900 and 2200 keV/atom. A significant enhancement of the x-ray production has been observed for the well-aligned C₂⁺ beam in comparison with the monoatomic case. It is shown that this effect results from the Coulomb explosion of the molecule during the channeling motion. By combining the Rutherford backscattering channeling (RBS-C) and the x-ray results we were able to determine the value of the transverse energy transfer as a function of the beam energy due to the break up process (Coulomb heating). This energy increases monotonically from 14 eV for 900 keV/atom up to 30 eV for 2200 keV/atom. In addition, we were able to predict the theoretical Coulomb heating values by combining calculations and simulations, the theoretical-experimental agreement, within the experimental errors, being quite reasonable.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. A, Atomic, molecular, and optical physics. New York. Vol. 77, no. 5 (May 2008), 052901, 6 p.pt_BR
dc.rightsOpen Accessen
dc.subjectFísica da matéria condensadapt_BR
dc.subjectRetroespalhamento rutherfordpt_BR
dc.subjectSiliciopt_BR
dc.subjectIons pesadospt_BR
dc.subjectPerda de energia de particulaspt_BR
dc.subjectCanalizaçãopt_BR
dc.subjectAglomerados molecularespt_BR
dc.titleCoulomb heating of channeled C+ and C2+ molecules in Sipt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000684509pt_BR
dc.type.originEstrangeiropt_BR


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