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Dynamic of negative ions in potassium-D-ribose collisions

2013-09-21Artigo científico Acesso aberto
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dc.contributor.authorAlmeida, D.
dc.contributor.authorFerreira da Silva, F.
dc.contributor.authorGarcia, G.
dc.contributor.authorLimão-Vieira, P.
dc.contributor.institutionCeFITec – Centro de Física e Investigação Tecnológica
dc.contributor.institutionDF – Departamento de Física
dc.contributor.pblAIP - American Institute of Physics
dc.date.accessioned2018-07-17T22:05:02Z
dc.date.available2018-07-17T22:05:02Z
dc.date.issued2013-09-21
dc.descriptionP.L.-V. acknowledges his visiting professor position at The Open University, UK. The Spanish Ministerio de Economia y Competitividad (Project No. FIS 2012-31230) is also acknowledged. Some of this work forms part of the EU/ESF COST Actions Nano-IBCT-MP1002 and The Chemical Cosmos-CM0805.
dc.description.abstractWe present negative ion formation from collisions of neutral potassium atoms with D-ribose (C5H10O5), the sugar unit in the DNA/RNA molecule. From the negative ion time-of-flight (TOF) mass spectra, OH- is the main fragment detected in the collision range 50-100 eV accounting on average for 50% of the total anion yield. Prominence is also given to the rich fragmentation pattern observed with special attention to O- (16m/z) formation. These results are in sharp contrast to dissociative electron attachment experiments. The TOF mass spectra assignments show that these channels are also observed, albeit with a much lower relative intensity. Branching ratios of the most abundant fragment anions as a function of the collision energy are obtained, allowing to establish a rationale on the collision dynamics. (C) 2013 AIP Publishing LLC.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent704142
dc.identifier.doi10.1063/1.4820949
dc.identifier.issn0021-9606
dc.identifier.otherPURE: 452070
dc.identifier.otherPURE UUID: da561fe0-8d49-4da7-9b23-14040e3d7614
dc.identifier.otherresearchoutputwizard: 41405
dc.identifier.otherWOS: 000324827800018
dc.identifier.otherScopus: 84884852073
dc.identifier.otherBibtex: urn:9acbc8a4059924a21437f1be78538c75
dc.identifier.otherPubMed: 24070287
dc.identifier.otherORCID: /0000-0002-2182-2965/work/46764317
dc.identifier.otherORCID: /0000-0003-2696-1152/work/151411915
dc.identifier.urihttp://hdl.handle.net/10362/41820
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F61645%2F2009/PT
dc.relationinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F68979%2F2010/PT
dc.relationBOND BREAKING AND TEMPORARY ANION STATES IN AMINO ACIDS BY ATOM-MOLECULE COLLISIONS: BIOLOGICAL IMPLICATIONS
dc.relationBiologic building blocks and relevant electron transfer processes: an atom-collision study
dc.subjectATOM-MOLECULE COLLISIONS
dc.subjectLOW-ENERGY-ELECTRON
dc.subjectGAS-PHASE
dc.subjectINTERACTION-MODEL
dc.subjectDNA-DAMAGE
dc.subjectNITROMETHANE
dc.subjectATTACHMENT
dc.subjectURACIL
dc.subject5-CHLOROURACIL
dc.subjectFRAGMENTATION
dc.titleDynamic of negative ions in potassium-D-ribose collisionsen
dc.typejournal article
degois.publication.issue11
degois.publication.titleJournal of Chemical Physics
degois.publication.volume139
dspace.entity.typePublication
oaire.awardNumberSFRH/BD/61645/2009
oaire.awardNumberSFRH/BPD/68979/2010
oaire.awardNumberPEst-OE/FIS/UI0068/2011
oaire.awardNumberPTDC/FIS-ATO/1832/2012
oaire.awardTitleBOND BREAKING AND TEMPORARY ANION STATES IN AMINO ACIDS BY ATOM-MOLECULE COLLISIONS: BIOLOGICAL IMPLICATIONS
oaire.awardTitleBiologic building blocks and relevant electron transfer processes: an atom-collision study
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F61645%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F68979%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso para Financiamento de Projectos de IC&DT Estratégicos e de Interesse Público promovidos por Laboratórios Associados e Unidades de I&D - 2011 - OE/PEst-OE%2FFIS%2FUI0068%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-ATO%2F1832%2F2012/PT
oaire.fundingStreamConcurso para Financiamento de Projectos de IC&DT Estratégicos e de Interesse Público promovidos por Laboratórios Associados e Unidades de I&D - 2011 - OE
oaire.fundingStream3599-PPCDT
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project.funder.nameFundação para a Ciência e a Tecnologia
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