Počet záznamů: 1

Mass spectrometry of hydrogen bonded clusters of heterocyclic molecules: Electron ionization vs. photoionization

  1. 1.
    0355369 - UFCH-W 2012 RIV NL eng J - Článek v odborném periodiku
    Poterya, Viktoriya - Tkáč, Ondřej - Fedor, Juraj - Fárník, Michal - Slavíček, P. - Buck, U.
    Mass spectrometry of hydrogen bonded clusters of heterocyclic molecules: Electron ionization vs. photoionization.
    International Journal of Mass Spectrometry. Roč. 290, 2-3 (2010), s. 85-93 ISSN 1387-3806
    Grant CEP: GA AV ČR KAN400400651; GA AV ČR KJB400400902; GA ČR GA203/09/0422
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: cluster photochemistry * hydrogen bonded clusters * heterocyclic molecule
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.009, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0194154