Vibrational Excitation of Cis- and Trans-1, 2-Difluoroethenes by Electron Impact: Effect of Dipole Moment on the Threshold Peaks

Authors

Michael Allan
Norman C. Craig, Oberlin College
Lewis V. McCarty

Abstract

Vibrational excitation near threshold was measured in cis- and trans-difluoroethene with the aim of assessing the role of the dipole moment in threshold peaks. Threshold peaks were found in both the isomer with and the isomer without a permanent dipole moment, but only for IR-active vibrations. A comparison with cross sections calculated with the Born approximation revealed that a 'nontrivial' contribution to the threshold peaks, that is, one which cannot be explained by direct dipole excitation, is found only for the isomer with a permanent dipole moment (cis).

Repository Citation

Allan, Michael, Norman C. Craig, and Lewis V. McCarty. 2002. "Vibrational Excitation of Cis- and Trans-1, 2-Difluoroethenes by Electron Impact: Effect of Dipole Moment on the Threshold Peaks." Journal of Physics B: Atomic, Molecular and Optical Physics 35(3): 523-532.

Publisher

IOP Publishing

Publication Date

1-1-2002

Publication Title

Journal of Physics B: Atomic, Molecular and Optical Physics

Department

Chemistry and Biochemistry

Document Type

Article

Language

English

Format

text