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    Université de Fribourg

    Electron scattering in ethene: Excitation of the ã³B1u state, elastic scattering, and vibrational excitation

    Allan, Michael ; Winstead, C. ; McKoy, V.

    In: Physical Review A, 2008, vol. 77, p. 042715

    Experimental and calculated absolute differential cross sections for the scattering of low-energy electrons from ethene are presented. Emphasis is on the excitation of the ã³B1u³(π,π*) state, but selected elastic and vibrational excitation cross sections are also given. In contrast to earlier calculations, which were nearly a factor of 2 too large,...

    Université de Fribourg

    Absolute angle-differential elastic cross sections for electron collisions with diacetylene

    Allan, Michael ; Winstead, C. ; McKoy, V.

    In: Physical Review A, 2011, vol. 83, no. 6, p. 062703

    We report measured and calculated differential elastic cross sections for collisions of low-energy electrons with diacetylene (1,3-butadiyne). A generally satisfactory agreement between theory and experiment has been found. The calculated cross sections provide interesting insight into the underlying resonant structure.

    Université de Fribourg

    Improved nonlocal resonance model for electron – HCl collisions

    Fedor, Juraj ; Kolorenč, P. ; Čižek, M. ; Horáček, J. ; Winstead, C. ; McKoy, V.

    In: Journal of Physics: Conference Series, 2009, vol. 194, p. 052036

    We present an improved nonlocal resonance model for electron-HCl collisions. The short-range part of the model is based on ab-initio electron scattering eigenphase sums calculated using the Schwinger Multichannel method and the long-range part on the potential curve of the bound HCl⁻ anion. We have calculated cross sections for vibrational excitation and dissociative electron attachment....

    Université de Fribourg

    Electron scattering in HCl: An improved nonlocal resonance model

    Fedor, Juraj ; Winstead, C. ; McKoy, V. ; Čížek, M. ; Houfek, K. ; Kolorenč, P. ; Horáček, J.

    In: Physcial Review A, 2010, vol. 31, no. 4, p. 042702

    We present an improved nonlocal resonance model for electron-HCl collisions. The short-range part of the model is fitted to ab initio electron-scattering eigenphase sums calculated using the Schwinger multichannel method, while the long-range part is based on the ab initio potential-energy curve of the bound anion HCl-. This model significantly improves the agreement of nonlocal resonance...