Reference : The Appearance of C2H3+ Ions from C2H3F by non-resonant Photoionization. A Translatio...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
The Appearance of C2H3+ Ions from C2H3F by non-resonant Photoionization. A Translational Energy Surprisal Analysis.
[fr] L'apparition des ions C2H3+ à partir de C2H3F par photoionisation non-résonante. Une analyse de la surprise de l'énergie translationnelle.
Momigny, J. [ > > ]
Locht, Robert mailto [Université de Liège - ULiège > Département de Chimie (Faculté des sciences) > Laboratoire de Dynamique Moléculaire (Sciences) > >]
Chemical Physics Letters
Elsevier Science
Yes (verified by ORBi)
The Netherlands
[en] Dissociative Ionization ; Translational energy ; Surprisal analysis ; Isolated state dissociation ; Bimodal surprisal ; C2H3+/C2H3F
[en] It is shown that for a photon energy of 16.85 eV the translational energy surprisal of the C2H3++F dissociation products from C2H3F+ has a bimodal behaviour. The possibility of considering the bimodal surprisal as due to the superposition of two translational energy distributions is consistent with the theoretical assumption of the concurrence of two channels in this dissociation process. The characteristics of these distributions, i.e. the energy width and the relative abundance, are in agreement with the results of an ab initio quantum-mechanical calculation of the dynamics of this dissociation. They are consistent with the simultaneous occurrence of a statistical dissociation of C2H3F+(X2A') into C2H3+(X1A') and an isolated state dissociation of C2H3F+(C2A") into C2H3+(a3A"). Negative lambda values obtained for the surprisal of both these distributions indicate an inversion of the translational level population of the dissociation products.
Laboratoire de Dynamique Moléculaire
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