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2009

Ilya Fabrikant Publications

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Full-Text Articles in Physics

Effects Of Two Vibrational Modes In The Dissociative Electron Attachment To Cf3cl, Michal Tarana, Pawel Wielgus, Szczepan Roszak, Ilya I. Fabrikant Jan 2009

Effects Of Two Vibrational Modes In The Dissociative Electron Attachment To Cf3cl, Michal Tarana, Pawel Wielgus, Szczepan Roszak, Ilya I. Fabrikant

Ilya Fabrikant Publications

We present a study of multimode effects in dissociative electron attachment to CF3Cl molecules using a time-independent version of the local complex potential theory. Symmetric stretch C-Cl vibrations v3 and symmetric deformation (or so-called umbrella) vibrations v2 are included. The neutral and anion potential energy surfaces are calculated using the second-order Møller-Plesset perturbation theory with an empirical adjustment of the vertical attachment energy. The final-state vibrational distribution in the CF3(v2) fragment is dominated by the v2=2 state. We also find an increase in the total cross section as compared with …


Electron Attachment To Cl2 From 300 To 1100 K: Experiment And Theory, Jeffrey Friedman, Thomas Miller, Linda Schaffer, A. A. Viggiano, Ilya I. Fabrikant Jan 2009

Electron Attachment To Cl2 From 300 To 1100 K: Experiment And Theory, Jeffrey Friedman, Thomas Miller, Linda Schaffer, A. A. Viggiano, Ilya I. Fabrikant

Ilya Fabrikant Publications

Rate constants for dissociative electron attachment to Cl2 have been measured from 300 to 1100 K in a high-temperature flowing-afterglow Langmuir-probe apparatus. R-matrix calculations have been carried out which compare well with the present measurements with possible deviation at the highest temperatures. The attachment rate constants do not show Arrhenius behavior. The temperature dependence of the calculated rate constants for successive vibrational levels provides insight as to this behavior. While the lowest vibrational level of Cl2 dominates attachment at low temperatures, the rate constant is not flat with temperature because of the p-wave character of the …