Femtosecond laser time-of-flight mass spectrometry of labile molecular analytes: laser-desorbed nitro-aromatic molecules

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dc.contributor.authorHankin, S. M.en
dc.contributor.authorTasker, A. D.en
dc.contributor.authorRobson, L.en
dc.contributor.authorLedingham, K. W. D.en
dc.contributor.authorFang, X.en
dc.contributor.authorMcKenna, P.en
dc.contributor.authorMcCanny, T.en
dc.contributor.authorSinghal, R. P.en
dc.contributor.authorKosmidis, C.en
dc.contributor.authorTzallas, P.en
dc.contributor.authorJaroszynski, D. A.en
dc.contributor.authorJones, R.en
dc.contributor.authorIssac, R. C.en
dc.contributor.authorJamison, S.en
dc.date.accessioned2015-11-24T18:28:31Z
dc.date.available2015-11-24T18:28:31Z
dc.identifier.issn0951-4198-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16153
dc.rightsDefault Licence-
dc.subjectnanosecond multiphoton ionizationen
dc.subjectinduced-fluorescenceen
dc.subjectorganic-moleculesen
dc.subjection impacten
dc.subjectdissociationen
dc.subjectdesorptionen
dc.subjectfieldsen
dc.subjectfragmentationen
dc.subjectpulseen
dc.subjectbeamsen
dc.titleFemtosecond laser time-of-flight mass spectrometry of labile molecular analytes: laser-desorbed nitro-aromatic moleculesen
heal.abstractFemtosecond laser time-of-flight mass spectra of solid samples of trinitrobenzene (TNB), trinitrotoluene (TNT) and trinitrophenol (TNP) have been recorded. Desorption of the solid samples was enacted by the fourth harmonic output (266 nm) of a 5 ns Nd:YAG laser. Subsequent femtosecond post-ionisation of the plume of neutral molecules was achieved using 800 nm laser pulses of 80 fs duration. Mass spectra have been recorded for desorption laser intensities from 2-6 x 10(9) W cm(-2) with ionisation laser intensities between 2 x 10(14) and 6 x 10(15) W cm(-2). Femtosecond laser ionisation has been shown to be capable of generating precursor and characteristic high-mass fragment ions for labile nitro-aromatic molecules commonly used in high-explosive materials. This feature is critical in the future development of femtosecond laser-based analytical instruments that can be used for complex molecular identification and quantitative analysis of environmentally important labile molecules. Furthermore, a comparison of femtosecond post-ionisation mass spectra with standard 70 eV electron impact data has revealed similarities in the spectra and hence the fragmentation processes. Copyright (C) 2001 John Wiley Sons, Ltd.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.secondary<Go to ISI>://000173501700005-
heal.identifier.secondaryhttp://onlinelibrary.wiley.com/store/10.1002/rcm.553/asset/553_ftp.pdf?v=1&t=h0xpb74q&s=f3bf616c87d505224ac3d791d00c2dbeb98673bd-
heal.journalNameRapid Communications in Mass Spectrometryen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2002-
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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