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The appearance of C2H+3 ions from C2H3F by non-resonant photoionization. A translational energy surprisal analysis

✍ Scribed by J. Momigny; R. Locht

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 367 KB
Volume: 211
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85178-q

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✦ Synopsis

It is shown that for a photon energy of 16.85 eV, the translational energy surprisal of the C2H: +F dissociation products from C2H,F+ has a bimodal hehaviour. 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+ (z 'A') into C2H3+ (% 'A') and an isolated state dissociation of C2HaF+ (c *A" ) into CIH: (H 'A"). The negative 1. values obtained for the surprisal of both these distributions indicate an inversion of the translational level population of the dissociation products.

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