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  5. Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)
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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/16671
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dc.contributor.authorGraham, P.en
dc.contributor.authorLedingham, K. W. D.en
dc.contributor.authorSinghal, R. P.en
dc.contributor.authorMcCanny, T.en
dc.contributor.authorHankin, S. M.en
dc.contributor.authorFang, X.en
dc.contributor.authorSmith, D. J.en
dc.contributor.authorKosmidis, C.en
dc.contributor.authorTzallas, P.en
dc.contributor.authorLangley, A. J.en
dc.contributor.authorTaday, P. F.en
dc.date.accessioned2015-11-24T18:33:00Z-
dc.date.available2015-11-24T18:33:00Z-
dc.identifier.issn0953-4075-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16671-
dc.rightsDefault Licence-
dc.subjectintense laser fieldsen
dc.subjectti-sapphire laseren
dc.subjectcoulomb explosionen
dc.subjectdissociative ionizationen
dc.subjectmultiphoton ionizationen
dc.subjectenhanced ionizationen
dc.subjectdiatomic-moleculesen
dc.subjectspatial alignmenten
dc.subjectpendular statesen
dc.subjectbrute forceen
dc.titleAn investigation of the angular distributions of fragment ions arising from the linear CS(2) and CO(2) moleculesen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://000084310500013-
heal.identifier.secondaryhttp://iopscience.iop.org/0953-4075/32/23/310/pdf/0953-4075_32_23_310.pdf-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate1999-
heal.abstractThe nonlinear interaction of the triatomic molecules CS(2) and CO(2) with the intense field of a linearly polarized laser beam of femtosecond (fs) pulse duration, was used to study the ionization and dissociation of the parent molecule. The fragment ion angular distributions arising from the Coulomb explosion of the parent ions were also measured. For CS(2), the angular distributions of CS(2)(+), CS(2)(2+), CS(2)(3+), CS(+), CS(2+), S(n+) (n less than or equal to 6) and C(m+) (m less than or equal to 4) ions are presented for a laser intensity of 1 x 10(16) W cm(-2) at a wavelength of 790 nm and pulse duration of 50 fs. The angular distributions of the parent molecular ions are all isotropic. The S(n+) fragments are peaked along the time-of-flight (TOF) axis, whereas the C(m+) fragments explode perpendicularly to this. Similar results for CO(2) are also presented for comparison. The S ion distributions do nor narrow as their ionic charge increases, and it is argued that the angular distributions for CS(2) are due mainly to the angular dependence of the ionization probability On the other hand, the distributions from the lighter CO(2) molecule are thought to be at least partly due to alignment via dipole moments induced by the laser, as in this case the O(n+) angular distributions are seen to narrow as their charge increases. The conclusion of these results is that the laser pulse may be too short for the CS(2) molecule to align in the pulse. Angular distributions are also presented for varying laser pulse durations, in the range of 50 fs to 300 ps. The dynamics of the ionization/dissociation mechanism are discussed in the context of the TOF mass spectra and angular distributions recorded for CS(2).en
heal.journalNameJournal of Physics B-Atomic Molecular and Optical Physicsen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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