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Doubly differential distribution of electron emission in ionization of uracil in collisions with 3.5-MeV/u bare C ions

hal.structure.identifierDepartment of Nuclear and Atomic Physics
dc.contributor.authorAGNIHOTRI, A.N.
hal.structure.identifierDepartment of Nuclear and Atomic Physics
dc.contributor.authorNANDI, S.
hal.structure.identifierDepartment of Physics
dc.contributor.authorKASTHURIRANGAN, S.
hal.structure.identifierBhabha Atomic Research Centre [BARC]
dc.contributor.authorKUMAR, A.
hal.structure.identifierConsejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] [CONICET]
dc.contributor.authorGALASSI, M.E.
hal.structure.identifierConsejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] [CONICET]
dc.contributor.authorRIVAROLA, R.D.
hal.structure.identifierInterface Physique et Chimie pour le Vivant [IPCV]
dc.contributor.authorCHAMPION, C.
hal.structure.identifierDepartment of Nuclear and Atomic Physics
dc.contributor.authorTRIBEDI, L.C.
dc.date.issued2013-03
dc.identifier.issn1050-2947
dc.description.abstractEnWe report the energy and angular distribution of the electron emission from an RNA base molecule uracil in collisions with 3.5-MeV/u bare C ions. The absolute double differential cross sections (DDCS) are measured for emission energy between a few to 600 eV. The angular distributions are compared to those obtained for the O2 molecule in the same experiment. The single differential cross sections (SDCS) are also deduced. The energy and angular distributions of the DDCS and SDCS are compared with the state-of-the-art quantum-mechanical models based on continuum distorted wave-eikonal initial state (CDW-EIS) and correct boundary first Born (CB1) approximations which use a suitable molecular wave function for uracil. The models, however, give substantial deviations from the observed energy and angular distributions of the DDCS as well as SDCS. The CDW-EIS calculations are closer to the data compared to the CB1. In the case of uracil a large difference in the forward-backward emission of electrons was observed in comparison to that in collisions with an oxygen molecule.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.enintermediate molecular states
dc.subject.enElectronic excitation and ionization of molecules
dc.title.enDoubly differential distribution of electron emission in ionization of uracil in collisions with 3.5-MeV/u bare C ions
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevA.87.032716
dc.subject.halPhysique [physics]/Physique [physics]/Physique Atomique [physics.atom-ph]
bordeaux.journalPhysical Review A : Atomic, molecular, and optical physics [1990-2015]
bordeaux.page032716
bordeaux.volume87
bordeaux.peerReviewedoui
hal.identifierin2p3-00823550
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00823550v1
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