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I. Electron-impact ionization and dissociation of C2H +2 and C2D +2

  • Atomic and Molecular Collisions
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Abstract

Absolute cross-sections for electron-impact ionization and dissociation of C2H +2 and C2D +2 have been measured for electron energies ranging from the corresponding thresholds up to 2.5 keV. The animated crossed beams experiment has been used. Light as well as heavy fragment ions that are produced from the ionization and the dissociation of the target have been detected for the first time. The maximum of the cross-section for single ionization is found to be (5.56 ± 0.03)× 10-17 cm2 around 140 eV. Cross-sections for dissociation of C2 H +2 (C2D +2 ) to ionic products are seen to decrease for two orders of magnitude, from C2D+ (12.6 ± 0.3) × 10-17 cm2 over CH+(9.55 ± 0.06) × 10-17 cm2, C+ (6.66 ± 0.05) × 10-17 cm2, C +2 (5.36 ± 0.27) × 10-17 cm2, H+ (4.73 ± 0.29) × 10-17 cm2 and CH +2 (4.56 ± 0.27) × 10-18 cm2 to H +2 (5.68 ± 0.49) × 10-19 cm2. Absolute cross-sections and threshold energies have been compared with the scarce data available in the literature.

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Authors and Affiliations

  1. Université Catholique de Louvain, Institute of Condensed Matter and Nanosciences, Chemin du Cyclotron 2, 1348, Louvain-la-Neuve, Belgium

    H. Cherkani-Hassani, S. Cherkani-Hassani, D. S. Belic, J. J. Jureta, J. Lecointre & P. Defrance

  2. Université Cadi Ayyad, Faculté Polydisciplinaire de Safi, Département des Sciences de la Matière, P.O. Box 4162, 46000, Safi, Morocco

    S. Cherkani-Hassani

  3. Faculty of Physics, P.O. Box 386, 11000, Belgrade, Serbia

    D. S. Belic

  4. Institute of Physics, P.O. Box 68, 11081, Belgrade, Serbia

    J. J. Jureta

  5. Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK

    J. Lecointre

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  1. H. Cherkani-Hassani
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  2. S. Cherkani-Hassani
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  3. D. S. Belic
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  4. J. J. Jureta
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  5. J. Lecointre
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  6. P. Defrance
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Correspondence to J. Lecointre.

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Cherkani-Hassani, H., Cherkani-Hassani, S., Belic, D. et al. I. Electron-impact ionization and dissociation of C2H +2 and C2D +2 . Eur. Phys. J. D 58, 75–83 (2010). https://doi.org/10.1140/epjd/e2010-00070-3

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  • DOI: https://doi.org/10.1140/epjd/e2010-00070-3

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