Electronic state resolved PEPICO spectroscopy of pyrimidine (Articolo in rivista)

Type
Label
  • Electronic state resolved PEPICO spectroscopy of pyrimidine (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0031-8949/78/05/058105 (literal)
Alternative label
  • Plekan, O; Coreno, M; Feyer, V; Moise, A; Richter, R; de Simone, M; Sankari, R; Prince, KC (2008)
    Electronic state resolved PEPICO spectroscopy of pyrimidine
    in Physica scripta (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Plekan, O; Coreno, M; Feyer, V; Moise, A; Richter, R; de Simone, M; Sankari, R; Prince, KC (literal)
Pagina inizio
  • 058105 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 78 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Plekan, O.; Feyer, V.; Moise, A.; Richter, R.; Prince, K. C.] Sincrotrone Trieste, I-34012 Trieste, Italy; [Plekan, O.] Inst Elect Phys, UA-88017 Uzhgorod, Ukraine; [Coreno, M.] CNR IMIP, I-00016 Rome, Italy; [Coreno, M.; de Simone, M.; Prince, K. C.] CNR INFM, Lab Nazl TASC, I-34012 Trieste, Italy; [Sankari, R.] Univ Turku, Dept Phys, FIN-20014 Turku, Finland (literal)
Titolo
  • Electronic state resolved PEPICO spectroscopy of pyrimidine (literal)
Abstract
  • \"Photoionization techniques, such as photoelectron spectroscopy (PES) and photoionization mass spectrometry (PIMS), are well-established and powerful methods for studying the spectroscopy of isolated bio-organic molecules and their fate under vacuum ultraviolet (VUV) irradiation. Measuring the energy selected electron leaving a molecular ion in coincidence with other particles, such as ions, can provide even deeper insights into the mechanisms of the interaction of molecules with ionizing radiation. We have thus implemented the electronic state resolved photoelectron photoIon coincidence (ER-PEPICO) technique in our laboratory. Here, we report our newly constructed apparatus, and its application for characterizing fragmentation processes occurring in pyrimidine. Ionization of the two highest molecular orbitals (MOs) of the valence band does not lead to fragmentation of the resulting ion. The third band observed in photoemission is due to the ionization of two MOs, and leads mainly to the formation of the parent ion. The next three electronic states are not resolved experimentally and appear as a single band; their ionization leads to fragments of mass to charge ratio m/e = 53 (C3H3N+), while ionization of deeper lying MOs leads mostly to m/e = 26 (C2H2+). We compare our data with previous non-coincidence photoionization results and describe the problems encountered and their solutions.\" (literal)
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