Journal article

Absolute angle-differential vibrational excitation cross sections for electron collisions with diacetylene

  • Allan, Michael Department of Chemistry, University of Fribourg, Switzerland
  • May, Olivier Department of Chemistry, University of Fribourg, Switzerland
  • Fedor, Juraj Department of Chemistry, University of Fribourg, Switzerland
  • Ibănescu, Bogdan C. Department of Chemistry, University of Fribourg, Switzerland
  • Andrić, Lidija UPMC, Université Paris 06, LCPMR, Paris, France
Show more…
    06.05.2011
Published in:
  • Physical Review A. - 2011, vol. 83, no. 5, p. 052701
English Absolute vibrational excitation cross sections were measured for diacetylene (1,3-butadiyne). The selectivity of vibrational excitation reveals detailed information about the shape resonances. Excitation of the C≡C stretch and of double quanta of the C-H bend vibrations reveals a ²Πu resonance at 1 eV (autodetachment width ~30 meV) and a ²Πg resonance at 6.2 eV (autodetachment width 1–2 eV). There is a strong preference for excitation of even quanta of the bending vibration. Excitation of the C-H stretch vibration reveals σ* resonances at 4.3, 6.8, and 9.8 eV, with autodetachment widths of ~2 eV. Detailed information about resonances permits conclusions about the mechanism of the dissociative electron attachment.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Chemistry
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302182
Statistics

Document views: 7 File downloads:
  • all_aad.pdf: 1