Double Photoionization of CO2 Molecules in the 34-50 eV Energy Range (Articolo in rivista)

Type
Label
  • Double Photoionization of CO2 Molecules in the 34-50 eV Energy Range (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp9048988 (literal)
Alternative label
  • Alagia, M (Alagia, M.)2,6; Candori, P (Candori, P.)3; Falcinelli, S (Falcinelli, S.)3; Lavollee, M (Lavollee, M.)1; Pirani, F (Pirani, F.)4; Richter, R (Richter, R.)5; Stranges, S (Stranges, S.)6,7; Vecchiocattivi, F (Vecchiocattivi, F.)1 (2009)
    Double Photoionization of CO2 Molecules in the 34-50 eV Energy Range
    in The journal of physical chemistry. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alagia, M (Alagia, M.)2,6; Candori, P (Candori, P.)3; Falcinelli, S (Falcinelli, S.)3; Lavollee, M (Lavollee, M.)1; Pirani, F (Pirani, F.)4; Richter, R (Richter, R.)5; Stranges, S (Stranges, S.)6,7; Vecchiocattivi, F (Vecchiocattivi, F.)1 (literal)
Pagina inizio
  • 14755 (literal)
Pagina fine
  • 14759 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 113 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 52 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ Paris 11, CNRS, LIXAM UMR8624, F-91405 Orsay, France 2. CNR ISMN Sez Roma1, I-00185 Rome, Italy 3. Univ Perugia, Dipartimento Ingn Civile & Ambientale, I-06125 Perugia, Italy 4. Univ Perugia, Dipartimento Chim, I-06125 Perugia, Italy 5. Sincrotrone Trieste, I-34149 Trieste, Italy 6. TASC CNR INFM Lab, I-34149 Trieste, Italy 7. Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy (literal)
Titolo
  • Double Photoionization of CO2 Molecules in the 34-50 eV Energy Range (literal)
Abstract
  • The double photoionization of CO2 molecules has been studied in the 34-50 eV photon energy range, by the use of synchrotron radiation and detecting electron-ion and electron-ion-ion coincidences. Three processes have been observed: (i) the formation of the CO22+ molecular dication, (ii) the production of a metastable (CO22+)* that dissociates, with an apparent lifetime of 3.1 ?s, giving rise to CO+ and O+ ions, and (iii) the dissociation leading to the same products, but occurring with a lifetime shorter than 0.05 ?s. The relative dependence on the photon energy of the cross section for such processes has been measured. While for the production of the molecular dication a threshold is observed, in agreement with the vertical threshold for double ionization of CO2, for the dissociative processes the threshold appears to be lower than that value, indicating the presence of an indirect dissociation, probably leading to the formation of CO+ together with a neutral autoionizing oxygen atom. (literal)
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