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Mass spectrometry of hydrogen bonded clusters of heterocyclic molecules: Electron ionization vs. photoionization
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SYSNO ASEP 0355369 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Mass spectrometry of hydrogen bonded clusters of heterocyclic molecules: Electron ionization vs. photoionization Author(s) Poterya, Viktoriya (UFCH-W) RID, ORCID
Tkáč, Ondřej (UFCH-W)
Fedor, Juraj (UFCH-W) ORCID
Fárník, Michal (UFCH-W) RID, ORCID
Slavíček, P. (CZ)
Buck, U. (DE)Source Title International Journal of Mass Spectrometry. - : Elsevier - ISSN 1387-3806
Roč. 290, 2-3 (2010), s. 85-93Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords cluster photochemistry ; hydrogen bonded clusters ; heterocyclic molecule Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN400400651 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KJB400400902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA203/09/0422 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000275258700003 DOI 10.1016/j.ijms.2009.12.007 Annotation Clusters of small heteroaromatic ring molecules pyrrole, imidazole and pyrazole were studied in a molecular beam experiment. Neutral cluster size distributions under various expansion conditions were probed by a scattering experiment with a He-atom beam. The clusters were ionized by electrons and their mass spectra were measured by a quadrupole mass spectrometer. Alternatively, the ionization was achieved by a non-resonant subsequent multiphoton process with 193 nm photons and the time-of-flight mass spectra were recorded. (1) The differences in the methods of cluster ionization, namely subsequent multiphoton and single photon ionization, and electron ionization are discussed. (2) More importantly, the differences between the ionization of pyrrole clusters on the one side, and imidazole and pyrazole clusters on the other side are studied. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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