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Differential electron emission from polycyclic aromatic hydrocarbon molecules under fast ion impact

dc.contributor.authorBISWAS, Shubhadeep
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorCHAMPION, Christophe
dc.contributor.authorWECK P., F.
dc.contributor.authorTRIBEDI, Lokesh C.
dc.date.issued2017
dc.identifier.issn2045-2322
dc.description.abstractEnInteraction between polycyclic aromatic hydrocarbon (PAH) molecule and energetic ion is a subject of interest in different areas of modern physics. Here, we present measurements of energy and angular distributions of absolute double differential electron emission cross section for coronene (C24H12) and fluorene (C13H10) molecules under fast bare oxygen ion impact. For coronene, the angular distributions of the low energy electrons are quite different from that of simpler targets like Ne or CH4, which is not the case for fluorene. The behaviour of the higher electron energy distributions for both the targets are similar to that for simple targets. In case of coronene, a clear signature of plasmon resonance is observed in the analysis of forward-backward angular asymmetry of low energy electron emission. For fluorene, such signature is not identified probably due to lower oscillator strength of plasmon compared to the coronene. The theoretical calculation based on the first-order Born approximation with correct boundary conditions (CB1), in general, reproduced the experimental observations qualitatively, for both the molecules, except in the low energy region for coronene, which again indicates the role of collective excitation. Single differential and total cross sections are also deduced. An overall comparative study is presented.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enDifferential electron emission from polycyclic aromatic hydrocarbon molecules under fast ion impact
dc.typeArticle de revue
dc.identifier.doi10.1038/s41598-017-05149-8
dc.subject.halPhysique [physics]
bordeaux.journalScientific Reports
bordeaux.page5560
bordeaux.volume7
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01703565
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01703565v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Scientific%20Reports&rft.date=2017&rft.volume=7&rft.issue=1&rft.spage=5560&rft.epage=5560&rft.eissn=2045-2322&rft.issn=2045-2322&rft.au=BISWAS,%20Shubhadeep&CHAMPION,%20Christophe&WECK%20P.,%20F.&TRIBEDI,%20Lokesh%20C.&rft.genre=article


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