Seminars Archive

Tue 25 Jan, at 11:00 - Seminar Room T2

4 Kelvin infrared emission spectroscopy as a new technique to investigate dynamic processes at surfaces

Andrea Locatelli
Cambridge University

As the chemical bond is being formed, molecules approaching the surface become vibrationally and rotationally excited. By probing the radiative de-excitation of the adsorbate-substrate vibrations, infreared (IR) emission spectroscopy will allow us to "watch" at the adsorption process itself and provide direct information about the adsorbate-substrate potential energy surface. For this purpose a highly sensitive apparatus which incorporates a liquid helium cooled FTIR interferometer and a supersonic molecular beam was designed. This instrument is now operational and the very first thermal IR emission data will be presented.

Last Updated on Tuesday, 24 April 2012 15:21