Differential electron scattering from positive ions measured by zero-degree ion-atom spectroscopy

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dc.contributor.authorZouros, T. J. M.en
dc.contributor.authorBenis, E. P.en
dc.contributor.authorGorczyca, T. W.en
dc.contributor.authorGonzalez, A. D.en
dc.contributor.authorZamkov, M.en
dc.contributor.authorRicahrd, P.en
dc.date.accessioned2015-11-24T18:30:20Z
dc.date.available2015-11-24T18:30:20Z
dc.identifier.issn0168-583X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16360
dc.rightsDefault Licence-
dc.subjectelectron-ion scatteringen
dc.subjectquasi-free electron scatteringen
dc.subjecthighly charged ionsen
dc.subjecthcien
dc.subjectzero-degree auger projectile spectroscopyen
dc.subjectresonant excitationen
dc.subjecthe-like ionsen
dc.subjectr-matrix calculationen
dc.subjectresonant transfer excitationen
dc.subjectmultiply-charged ionsen
dc.subjectelastic-scatteringen
dc.subjectcross-sectionsen
dc.subjectdielectronic-recombinationen
dc.subjecthemispherical analyzeren
dc.subject2-d psden
dc.subjectinelastic-scatteringen
dc.subjectangular-distributionen
dc.subjectcollisionsen
dc.titleDifferential electron scattering from positive ions measured by zero-degree ion-atom spectroscopyen
heal.abstractRecent developments in quasi-free electron scattering from highly charged ions are reported. Results using a high-efficiency zero-degree Auger projectile spectroscopy setup are presented primarily for collisions of H- and He-like boron beams with H, targets. A novel technique for the in situ control and determination of the metastable 1s2s(3)S beam fraction of He-like boron allowed for an accurate determination of absolute double differential scattering cross sections for 180degrees resonant and non-resonant electron scattering from both ground-(1s(2)) and mixed-(1s(2), 1s2s (3)S) B(3+) states. The observed richly structured B(2+) (1s 2l nl') Rydberg series is produced by resonant excitation (RE) from the 1s(2) ground state, while the triply excited B(2+) (2s 2l '2l") hollow ionic states are produced by RE from the 1s 2s (3)S metastable state. The consistency of the method was checked by quasi-free electron scattering from H-like B(4+) ions giving rise to the 2l nl' Rydberg series. Differential R-matrix calculations within the electron scattering model for electron-ion scattering from both H-like and ground state He-like boron were found to be in excellent overall agreement. The production of triply excited (2s 2l' 2l") states by RE was also studied for the Z = 5-9 isoelectronic sequence. These results convincingly demonstrate that large-angle differential scattering cross section measurements, practically impossible to perform with present day crossed or merged electron-ion beam techniques, are amenable to measurement through high resolution electron spectroscopy of ion-atom collisions, providing some of the most sensitive tests of atomic structure and electron-ion scattering calculations. (C) 2003 Elsevier Science B.V. All rights reserved.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDoi 10.1016/S0168-583x(03)00530-5-
heal.identifier.secondary<Go to ISI>://000183211200098-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0168583X03005305/1-s2.0-S0168583X03005305-main.pdf?_tid=75893ed4-4de8-11e3-bc51-00000aacb360&acdnat=1384514835_eed7d4c33ca55412600185356aa9f291-
heal.journalNameNuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atomsen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2003-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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