Table of Contents
Laser Chemistry
Volume 11, Issue 3-4, Pages 247-252

High Resolution Proton Energy Loss Spectroscopy of High Overtone Levels of Polyatomic Molecules

Max-Planck-Institut für Strömungsforschung, Göttingen W-3400 , Germany

Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In the inelastic scattering of nearly monoenergetic proton beams (≅ 20 e V) from polyatomic molecules such as CF4 sharp peaks are observed corresponding to the excitation of very high overtone levels (n ≤ 14) of the infrared active modes. The collision mechanism leading to the high degree of excitation is described and an example from recent experiments is presented. A fit of the CF4 spectra provides new anharmonicity constants for the ν3-mode.