Dissociative electron attachment to HBr: A temperature effect
Fedor, JurajInstitut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität, Innsbruck, Austria - Department of Chemistry, Universityof Fribourg, Switzerland
Cingel, M.Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität, Innsbruck, Austria
Skalný, J. D.Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität, Innsbruck, Austria
Scheier, P.Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität, Innsbruck, Austria
Märk, T. D.Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens Universität, Innsbruck, Austria
Čížek, M.Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University Prague, Praha, Czech Republic
Kolorenč, P.Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University Prague, Praha, Czech Republic
Horáček, J.Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University Prague, Praha, Czech Republic
English
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.