Faculté des sciences

Dissociative electron attachment to HBr: A temperature effect

Fedor, Juraj ; Cingel, M. ; Skalný, J. D. ; Scheier, P. ; Märk, T. D. ; Čížek, M. ; Kolorenč, P. ; Horáček, J.

In: Physical Review A, 2007, vol. 75, p. 022703

The effects of rovibrational temperature on dissociative electron attachment to hydrogen bromide has been investigated from the experimental and theoretical point of view. Theoretical calculations based on the nonlocal resonance model predict a strong temperature effect on the Br⁻ fragment ion yield due to population of higher vibrational and rotational states. A crossed beam experimental setup... Plus

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    Summary
    The effects of rovibrational temperature on dissociative electron attachment to hydrogen bromide has been investigated from the experimental and theoretical point of view. Theoretical calculations based on the nonlocal resonance model predict a strong temperature effect on the Br⁻ fragment ion yield due to population of higher vibrational and rotational states. A crossed beam experimental setup consisting of a temperature controlled effusive molecular beam and a trochoidal electron monochromator has been used to confirm this prediction. The high degree of agreement between experiment and theory indicates the validity of the theoretical model and its underlying physical picture.