Effective dissociation cross section for the low-energy (0.5-31 eV) electron impact on solid hexane thin films

We describe a low-energy electron impact experiment, performed on thin n-hexane films held at 80 K, that was designed for the measurement of the effective dissociation cross section in the energy range 0.5-31 eV. The onset of dissociation was found at =~3,6 eV incident electron energy, implicating the excitation of a low-lying triplet state. High dissociation rates at electron energies close to the ionization threshold were correlated to dissociative excited singlet and superexcited states.

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Bibliographic Details
Main Authors: Leclerc, Grégoire, Cui, Zuolin, Sanche, Léon
Format: article biblioteca
Language:eng
Subjects:U30 - Méthodes de recherche, mesure (activité), radiation, film, http://aims.fao.org/aos/agrovoc/c_4668, http://aims.fao.org/aos/agrovoc/c_6422, http://aims.fao.org/aos/agrovoc/c_2899,
Online Access:http://agritrop.cirad.fr/561346/
http://agritrop.cirad.fr/561346/1/document_561346.pdf
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Summary:We describe a low-energy electron impact experiment, performed on thin n-hexane films held at 80 K, that was designed for the measurement of the effective dissociation cross section in the energy range 0.5-31 eV. The onset of dissociation was found at =~3,6 eV incident electron energy, implicating the excitation of a low-lying triplet state. High dissociation rates at electron energies close to the ionization threshold were correlated to dissociative excited singlet and superexcited states.