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dc.creatorVeljković, Filip M.
dc.creatorĐustebek, Jasmina B.
dc.creatorVeljković, Miomir V.
dc.creatorVeličković, Suzana
dc.creatorPerić-Grujić, Aleksandra
dc.date.accessioned2021-03-10T11:51:04Z
dc.date.available2021-03-10T11:51:04Z
dc.date.issued2012
dc.identifier.issn0951-4198
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/2140
dc.description.abstractRATIONALE The very small clusters of the type KnF are of particular importance since their first ionization energies (IEs) are lower than those of the alkali metal atoms. Theoretical calculation has demonstrated that this kind of cluster represents a potential 'building block' for cluster-assembly materials with unique structural, electronic, optical, magnetic, and thermodynamic properties. To date, however, there have been no experimental results on the IEs of KnF (n gt 2) clusters. METHOD KnF (n?=?26) clusters were produced by the evaporation of a solid potassium fluoride salt using a modified thermal ionization source of modified design, and mass selected by a magnetic sector mass spectrometer where their IEs were determined. RESULTS Clusters KnF (n?=?36) were detected for the first time. The order of the ion intensities was K2F+ gt ? gt ?K4F+ gt ? gt ?K3F+K6F+? gt ?K5F+. The determined IEs were 3.99 +/- 0.20?eV for K2F, 4.16 +/- 0.20?eV for K3F, 4.27 +/- 0.20?eV for K4F, 4.22 +/- 0.20?eV for K5F, and 4.31 +/- 0.20?eV for K6F. The IEs of KnF increase slightly with the increase in potassium atom number from 2 to 6. We also observed that the presence of a fluorine atom leads to increasing ionization energy of bare metal potassium clusters. CONCLUSIONS The modified thermal ionization source provides an efficient way of obtaining the fluorine-doped potassium clusters. These results also present experimental proof that KnF (n?=?26) clusters belong to the group of 'superalkali' species.en
dc.publisherWiley, Hoboken
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172019/RS//
dc.rightsrestrictedAccess
dc.sourceRapid Communications in Mass Spectrometry
dc.titleProduction and ionization energies of KnF (n=2-6) clusters by thermal ionization mass spectrometryen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage1766
dc.citation.issue16
dc.citation.other26(16): 1761-1766
dc.citation.rankM22
dc.citation.spage1761
dc.citation.volume26
dc.identifier.doi10.1002/rcm.6284
dc.identifier.pmid22777777
dc.identifier.scopus2-s2.0-84863674422
dc.identifier.wos000306279800005
dc.type.versionpublishedVersion


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Приказ основних података о документу