Počet záznamů: 1  

Effects of Ion Excitation on Charge Transfer Reactions of the Mars, Venus, and Earth Ionospheres

  1. 1.
    0181750 - UFCH-W 20030189 RIV GB eng J - Článek v odborném periodiku
    Nicolas, C. - Alcaraz, C. - Thissen, R. - Žabka, Ján - Dutuit, O.
    Effects of Ion Excitation on Charge Transfer Reactions of the Mars, Venus, and Earth Ionospheres.
    Planetary and Space Science. Roč. 50, - (2002), s. 877-887. ISSN 0032-0633. E-ISSN 1873-5088
    Výzkumný záměr: CEZ:AV0Z4040901
    Klíčová slova: ionospheres * planetology * energy
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 1.634, rok: 2002

    This study shows the strong influence of electronic as well as vibrational internal energy on most ion-molecule reactions. In particular endothermic charge transfer reactions are driven by electronic excitation of O-2(+) and NO+ ions in their a(4)Pi(u), and a(3)Sigma(+) metastable states, respectively. Moreover, it is shown that lifetimes of these metastable states are sufficient to survive the mean free path in the lowest part of ionospheres and therefore express their enhanced reactivity. The reactions of O-2(+) with NO as well as the reactions of CO2+ with NO, O-2(+), CO and to a less extent N-2 are driven by vibrational excitation. N-2(+) and CO+ reactions vary much less with photon energy than the other ones, except for the case of reactions with Ar. The effects of the molecular ion internal energy content on their reactivity must be included in the ionospheric models for most of the reactions investigated in the present work.
    Trvalý link: http://hdl.handle.net/11104/0078272

     
     

Počet záznamů: 1  

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