Unusual temperature dependence of the dissociative electron attachment cross section of 2-thiouracil

Abstract : At low energies (<3 eV), molecular dissociation is controlled by dissociative electron attachment for which the initial step, i.e., the formation of the transient negative ion, can be initiated by shape resonance or vibrational Feshbach resonance (VFR) mediated by the formation of a dipole bound anion. The temperature dependence for shape-resonances is well established; however, no experimental information is available yet on the second mechanism. Here, we show that the dissociation cross section for VFRs mediated by the formation of a dipole bound anion decreases as a function of a temperature. The change remains, however, relatively small in the temperature range of 370-440 K but it might be more pronounced at the extended temperature range.
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Article dans une revue
Journal of Chemical Physics, American Institute of Physics, 2016, 144, pp.034306. 〈10.1063/1.4940147〉
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Contributeur : Dominique Girod <>
Soumis le : mardi 9 février 2016 - 14:12:38
Dernière modification le : jeudi 15 mars 2018 - 11:40:10

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J. Kopyra, H. Abdoul-Carime. Unusual temperature dependence of the dissociative electron attachment cross section of 2-thiouracil. Journal of Chemical Physics, American Institute of Physics, 2016, 144, pp.034306. 〈10.1063/1.4940147〉. 〈in2p3-01271620〉

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